20031211020100 has 108 divisors (see below), whose sum is σ = 50566379794560. Its totient is φ = 6867588436800.

The previous prime is 20031211020083. The next prime is 20031211020109. The reversal of 20031211020100 is 102011213002.

It is not an unprimeable number, because it can be changed into a prime (20031211020109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 171044565 + ... + 171161635.

It is an arithmetic number, because the mean of its divisors is an integer number (468207220320).

Almost surely, 2^{20031211020100} is an apocalyptic number.

20031211020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031211020100 is an abundant number, since it is smaller than the sum of its proper divisors (30535168774460).

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

20031211020100 is a wasteful number, since it uses less digits than its factorization.

20031211020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152018 (or 152004 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20031211020100 its reverse (102011213002), we get a palindrome (20133222233102).

The spelling of 20031211020100 in words is "twenty trillion, thirty-one billion, two hundred eleven million, twenty thousand, one hundred".