222121123112031 has 128 divisors (see below), whose sum is σ = 372542207385600. Its totient is φ = 115701947112960.

The previous prime is 222121123111991. The next prime is 222121123112039. The reversal of 222121123112031 is 130211321121222.

It is not a de Polignac number, because 222121123112031 - 2¹⁰ = 222121123111007 is a prime.

It is a super-2 number, since 2×222121123112031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222121123111992 and 222121123112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121123112039) 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 127 ways as a sum of consecutive naturals, for example, 2229925230 + ... + 2230024836.

It is an arithmetic number, because the mean of its divisors is an integer number (2910485995200).

Almost surely, 2^{222121123112031} is an apocalyptic number.

222121123112031 is a deficient number, since it is larger than the sum of its proper divisors (150421084273569).

222121123112031 is a wasteful number, since it uses less digits than its factorization.

222121123112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104349.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 222121123112031 its reverse (130211321121222), we get a palindrome (352332444233253).

The spelling of 222121123112031 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twenty-three million, one hundred twelve thousand, thirty-one".