20120202131100 has 144 divisors (see below), whose sum is σ = 61511372186880. Its totient is φ = 5063671065600.

The previous prime is 20120202131087. The next prime is 20120202131149. The reversal of 20120202131100 is 113120202102.

It is a super-3 number, since 3×20120202131100³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20120202131100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5211661 + ... + 8209860.

Almost surely, 2^{20120202131100} is an apocalyptic number.

20120202131100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120202131100 is an abundant number, since it is smaller than the sum of its proper divisors (41391170055780).

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

20120202131100 is a wasteful number, since it uses less digits than its factorization.

20120202131100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13421820 (or 13421813 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20120202131100 its reverse (113120202102), we get a palindrome (20233322333202).

The spelling of 20120202131100 in words is "twenty trillion, one hundred twenty billion, two hundred two million, one hundred thirty-one thousand, one hundred".