212021013031 has 16 divisors (see below), whose sum is σ = 215135424000. Its totient is φ = 208931392800.

The previous prime is 212021012911. The next prime is 212021013059. The reversal of 212021013031 is 130310120212.

It is a cyclic number.

It is not a de Polignac number, because 212021013031 - 2¹¹ = 212021010983 is a prime.

It is a super-2 number, since 2×212021013031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021012996 and 212021013014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021017031) 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, 37919046 + ... + 37924636.

It is an arithmetic number, because the mean of its divisors is an integer number (13445964000).

Almost surely, 2^212021013031 is an apocalyptic number.

212021013031 is a deficient number, since it is larger than the sum of its proper divisors (3114410969).

212021013031 is a wasteful number, since it uses less digits than its factorization.

212021013031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212021013031 its reverse (130310120212), we get a palindrome (342331133243).

The spelling of 212021013031 in words is "two hundred twelve billion, twenty-one million, thirteen thousand, thirty-one".