1216263055231 has 8 divisors (see below), whose sum is σ = 1403510211584. Its totient is φ = 1032389721720.

The previous prime is 1216263055219. The next prime is 1216263055327. The reversal of 1216263055231 is 1325503626121.

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

It is not a de Polignac number, because 1216263055231 - 2⁵ = 1216263055199 is a prime.

It is a super-2 number, since 2×1216263055231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216263055331) 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, 843454935 + ... + 843456376.

It is an arithmetic number, because the mean of its divisors is an integer number (175438776448).

Almost surely, 2^{1216263055231} is an apocalyptic number.

1216263055231 is a deficient number, since it is larger than the sum of its proper divisors (187247156353).

1216263055231 is a wasteful number, since it uses less digits than its factorization.

1216263055231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686911421.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 1216263055231 in words is "one trillion, two hundred sixteen billion, two hundred sixty-three million, fifty-five thousand, two hundred thirty-one".