212112110031031 has 4 divisors (see below), whose sum is σ = 242413840035472. Its totient is φ = 181810380026592.

The previous prime is 212112110031011. The next prime is 212112110031061. The reversal of 212112110031031 is 130130011211212.

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 212112110031031 - 2¹¹ = 212112110028983 is a prime.

It is a super-2 number, since 2×212112110031031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112110031001) 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 3 ways as a sum of consecutive naturals, for example, 15150865002210 + ... + 15150865002223.

It is an arithmetic number, because the mean of its divisors is an integer number (60603460008868).

Almost surely, 2^{212112110031031} is an apocalyptic number.

212112110031031 is a deficient number, since it is larger than the sum of its proper divisors (30301730004441).

212112110031031 is an equidigital number, since it uses as much as digits as its factorization.

212112110031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30301730004440.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 212112110031031 its reverse (130130011211212), we get a palindrome (342242121242243).

The spelling of 212112110031031 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred ten million, thirty-one thousand, thirty-one".