202112112131 has 4 divisors (see below), whose sum is σ = 202166257872. Its totient is φ = 202057966392.

The previous prime is 202112112091. The next prime is 202112112179. The reversal of 202112112131 is 131211211202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202112112131 - 2¹⁸ = 202111849987 is a prime.

It is a super-2 number, since 2×202112112131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202112112331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27067271 + ... + 27074736.

It is an arithmetic number, because the mean of its divisors is an integer number (50541564468).

Almost surely, 2^202112112131 is an apocalyptic number.

202112112131 is a deficient number, since it is larger than the sum of its proper divisors (54145741).

202112112131 is an equidigital number, since it uses as much as digits as its factorization.

202112112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54145740.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 202112112131 its reverse (131211211202), we get a palindrome (333323323333).

The spelling of 202112112131 in words is "two hundred two billion, one hundred twelve million, one hundred twelve thousand, one hundred thirty-one".