20013221030112 has 72 divisors (see below), whose sum is σ = 57055954298616. Its totient is φ = 6654269926656.

The previous prime is 20013221030107. The next prime is 20013221030119. The reversal of 20013221030112 is 21103012231002.

20013221030112 is a `hidden beast` number, since 20 + 0 + 1 + 322 + 10 + 301 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013221030119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87404998 + ... + 87633669.

It is an arithmetic number, because the mean of its divisors is an integer number (792443809703).

Almost surely, 2^{20013221030112} is an apocalyptic number.

It is an amenable number.

20013221030112 is an abundant number, since it is smaller than the sum of its proper divisors (37042733268504).

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

20013221030112 is a wasteful number, since it uses less digits than its factorization.

20013221030112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175039080 (or 175039069 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20013221030112 its reverse (21103012231002), we get a palindrome (41116233261114).

The spelling of 20013221030112 in words is "twenty trillion, thirteen billion, two hundred twenty-one million, thirty thousand, one hundred twelve".