202112121031 has 2 divisors, whose sum is σ = 202112121032. Its totient is φ = 202112121030.

The previous prime is 202112121017. The next prime is 202112121053. The reversal of 202112121031 is 130121211202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202112121031 - 2⁹ = 202112120519 is a prime.

It is a super-2 number, since 2×202112121031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202112120996 and 202112121014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202112121131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101056060515 + 101056060516.

It is an arithmetic number, because the mean of its divisors is an integer number (101056060516).

Almost surely, 2^202112121031 is an apocalyptic number.

202112121031 is a deficient number, since it is larger than the sum of its proper divisors (1).

202112121031 is an equidigital number, since it uses as much as digits as its factorization.

202112121031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 202112121031 its reverse (130121211202), we get a palindrome (332233332233).

The spelling of 202112121031 in words is "two hundred two billion, one hundred twelve million, one hundred twenty-one thousand, thirty-one".