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230120223221 = 7131092507767
BaseRepresentation
bin1101011001010000111…
…0111111000111110101
3210222222110210120010102
43112110032333013311
512232241234120341
6253414335003445
722424410423610
oct3262416770765
9728873716112
10230120223221
1189658959769
1238722969585
1318914588975
14b1d04a3177
155ebc8e9c9b
hex35943bf1f5

230120223221 has 8 divisors (see below), whose sum is σ = 263014707840. Its totient is φ = 197230780368.

The previous prime is 230120223209. The next prime is 230120223233. The reversal of 230120223221 is 122322021032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (230120223209) and next prime (230120223233).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230120223221 is a prime.

It is a super-2 number, since 2×2301202232212 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230120223193 and 230120223202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230120223251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162121 + ... + 1345646.

It is an arithmetic number, because the mean of its divisors is an integer number (32876838480).

Almost surely, 2230120223221 is an apocalyptic number.

It is an amenable number.

230120223221 is a deficient number, since it is larger than the sum of its proper divisors (32894484619).

230120223221 is a wasteful number, since it uses less digits than its factorization.

230120223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520883.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 230120223221 its reverse (122322021032), we get a palindrome (352442244253).

The spelling of 230120223221 in words is "two hundred thirty billion, one hundred twenty million, two hundred twenty-three thousand, two hundred twenty-one".

Divisors: 1 7 13109 91763 2507767 17554369 32874317603 230120223221