20012211021120 has 112 divisors (see below), whose sum is σ = 63543474241728. Its totient is φ = 5336194498560.

The previous prime is 20012211021059. The next prime is 20012211021151. The reversal of 20012211021120 is 2112011221002.

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 20012211021120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12317040 + ... + 13846800.

Almost surely, 2^{20012211021120} is an apocalyptic number.

20012211021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012211021120 is an abundant number, since it is smaller than the sum of its proper divisors (43531263220608).

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

20012211021120 is a wasteful number, since it uses less digits than its factorization.

20012211021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543408 (or 1543398 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20012211021120 its reverse (2112011221002), we get a palindrome (22124222242122).

The spelling of 20012211021120 in words is "twenty trillion, twelve billion, two hundred eleven million, twenty-one thousand, one hundred twenty".