20021102431000 has 64 divisors (see below), whose sum is σ = 51108414233760. Its totient is φ = 7280400880000.

The previous prime is 20021102430991. The next prime is 20021102431007. The reversal of 20021102431000 is 13420112002.

It is a super-2 number, since 2×20021102431000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021102431007) 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, 910039111 + ... + 910061110.

Almost surely, 2^{20021102431000} is an apocalyptic number.

20021102431000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021102431000 is an abundant number, since it is smaller than the sum of its proper divisors (31087311802760).

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

20021102431000 is a wasteful number, since it uses less digits than its factorization.

20021102431000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820100253 (or 1820100239 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20021102431000 its reverse (13420112002), we get a palindrome (20034522543002).

The spelling of 20021102431000 in words is "twenty trillion, twenty-one billion, one hundred two million, four hundred thirty-one thousand".