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223201232221 = 11117563172597
BaseRepresentation
bin1100111111011111010…
…1001000010101011101
3210100010021111101210111
43033313311020111131
512124104003412341
6250312013010021
722061064112312
oct3176765102535
9710107441714
10223201232221
1186728305390
1237311783911
1318080ca7456
14ab355d2d09
155c15283681
hex33f7d4855d

223201232221 has 8 divisors (see below), whose sum is σ = 243495735264. Its totient is φ = 202907309520.

The previous prime is 223201232179. The next prime is 223201232297. The reversal of 223201232221 is 122232102322.

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

It is a cyclic number.

It is not a de Polignac number, because 223201232221 - 215 = 223201199453 is a prime.

It is a super-3 number, since 3×2232012322213 (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223201232192 and 223201232201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223201236221) 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, 1206895 + ... + 1379491.

It is an arithmetic number, because the mean of its divisors is an integer number (30436966908).

Almost surely, 2223201232221 is an apocalyptic number.

It is an amenable number.

223201232221 is a deficient number, since it is larger than the sum of its proper divisors (20294503043).

223201232221 is a wasteful number, since it uses less digits than its factorization.

223201232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290171.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 223201232221 its reverse (122232102322), we get a palindrome (345433334543).

The spelling of 223201232221 in words is "two hundred twenty-three billion, two hundred one million, two hundred thirty-two thousand, two hundred twenty-one".

Divisors: 1 11 117563 172597 1293193 1898567 20291021111 223201232221