20211232031000 has 128 divisors (see below), whose sum is σ = 47434334875200. Its totient is φ = 8060566348800.

The previous prime is 20211232030943. The next prime is 20211232031117. The reversal of 20211232031000 is 13023211202.

It is a super-2 number, since 2×20211232031000² (a number of 27 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 20211232031000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1543660454 + ... + 1543673546.

Almost surely, 2^{20211232031000} is an apocalyptic number.

20211232031000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20211232031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23717167437600).

20211232031000 is an abundant number, since it is smaller than the sum of its proper divisors (27223102844200).

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

20211232031000 is a wasteful number, since it uses less digits than its factorization.

20211232031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17566 (or 17552 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20211232031000 its reverse (13023211202), we get a palindrome (20224255242202).

The spelling of 20211232031000 in words is "twenty trillion, two hundred eleven billion, two hundred thirty-two million, thirty-one thousand".