223121156461265 has 16 divisors (see below), whose sum is σ = 269866177093632. Its totient is φ = 177083196421824.

The previous prime is 223121156461237. The next prime is 223121156461397. The reversal of 223121156461265 is 562164651121322.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 223121156461265 - 2⁸ = 223121156461009 is a prime.

It is a super-3 number, since 3×223121156461265³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5498312 + ... + 21828278.

It is an arithmetic number, because the mean of its divisors is an integer number (16866636068352).

Almost surely, 2^{223121156461265} is an apocalyptic number.

It is an amenable number.

223121156461265 is a deficient number, since it is larger than the sum of its proper divisors (46745020632367).

223121156461265 is a wasteful number, since it uses less digits than its factorization.

223121156461265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16351616.

The product of its digits is 1036800, while the sum is 47.

The spelling of 223121156461265 in words is "two hundred twenty-three trillion, one hundred twenty-one billion, one hundred fifty-six million, four hundred sixty-one thousand, two hundred sixty-five".