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1220201223 = 31921407039
BaseRepresentation
bin100100010111010…
…1100101100000111
310011001000122101220
41020232230230013
54444332414343
6321025051423
742144352653
oct11056545407
93131018356
101220201223
1157685426a
122a0786b73
13165a48377
14b80aba63
15721cb183
hex48bacb07

1220201223 has 8 divisors (see below), whose sum is σ = 1712563200. Its totient is φ = 770653368.

The previous prime is 1220201189. The next prime is 1220201249. The reversal of 1220201223 is 3221020221.

It is a happy number.

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

It is not a de Polignac number, because 1220201223 - 26 = 1220201159 is a prime.

It is a super-2 number, since 2×12202012232 = 2977782049221391458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220201273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10703463 + ... + 10703576.

It is an arithmetic number, because the mean of its divisors is an integer number (214070400).

Almost surely, 21220201223 is an apocalyptic number.

1220201223 is a deficient number, since it is larger than the sum of its proper divisors (492361977).

1220201223 is a wasteful number, since it uses less digits than its factorization.

1220201223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21407061.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220201223 is about 34931.3787732463. The cubic root of 1220201223 is about 1068.5884735745.

Adding to 1220201223 its reverse (3221020221), we get a palindrome (4441221444).

The spelling of 1220201223 in words is "one billion, two hundred twenty million, two hundred one thousand, two hundred twenty-three".

Divisors: 1 3 19 57 21407039 64221117 406733741 1220201223