222131222012331 has 16 divisors (see below), whose sum is σ = 329083598166400. Its totient is φ = 148087343508264.

The previous prime is 222131222012299. The next prime is 222131222012347. The reversal of 222131222012331 is 133210222131222.

222131222012331 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 3 + 122 + 201 + 2 + 331 = 666.

It is not a de Polignac number, because 222131222012331 - 2⁵ = 222131222012299 is a prime.

It is a super-2 number, since 2×222131222012331² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222131222012295 and 222131222012304.

It is not an unprimeable number, because it can be changed into a prime (222131222012731) 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 15 ways as a sum of consecutive naturals, for example, 31717440 + ... + 38082258.

It is an arithmetic number, because the mean of its divisors is an integer number (20567724885400).

Almost surely, 2^{222131222012331} is an apocalyptic number.

222131222012331 is a deficient number, since it is larger than the sum of its proper divisors (106952376154069).

222131222012331 is a wasteful number, since it uses less digits than its factorization.

222131222012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7657415 (or 7657409 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 222131222012331 its reverse (133210222131222), we get a palindrome (355341444143553).

The spelling of 222131222012331 in words is "two hundred twenty-two trillion, one hundred thirty-one billion, two hundred twenty-two million, twelve thousand, three hundred thirty-one".