211031121232320 has 56 divisors (see below), whose sum is σ = 670023809915664. Its totient is φ = 56274965661696.

The previous prime is 211031121232279. The next prime is 211031121232333. The reversal of 211031121232320 is 23232121130112.

It is a super-2 number, since 2×211031121232320² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109912041349 + ... + 109912043268.

Almost surely, 2^{211031121232320} is an apocalyptic number.

211031121232320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211031121232320 is an abundant number, since it is smaller than the sum of its proper divisors (458992688683344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211031121232320 is a wasteful number, since it uses less digits than its factorization.

211031121232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219824084637 (or 219824084627 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 211031121232320 its reverse (23232121130112), we get a palindrome (234263242362432).

The spelling of 211031121232320 in words is "two hundred eleven trillion, thirty-one billion, one hundred twenty-one million, two hundred thirty-two thousand, three hundred twenty".