212021003031 has 16 divisors (see below), whose sum is σ = 283344668544. Its totient is φ = 141022625184.

The previous prime is 212021003011. The next prime is 212021003039. The reversal of 212021003031 is 130300120212.

It is not a de Polignac number, because 212021003031 - 2¹⁴ = 212020986647 is a prime.

It is a super-2 number, since 2×212021003031² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212021003031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021003039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2999265 + ... + 3069141.

It is an arithmetic number, because the mean of its divisors is an integer number (17709041784).

Almost surely, 2^212021003031 is an apocalyptic number.

212021003031 is a deficient number, since it is larger than the sum of its proper divisors (71323665513).

212021003031 is a wasteful number, since it uses less digits than its factorization.

212021003031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72190.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 212021003031 its reverse (130300120212), we get a palindrome (342321123243).

The spelling of 212021003031 in words is "two hundred twelve billion, twenty-one million, three thousand, thirty-one".