20102201220120 has 64 divisors (see below), whose sum is σ = 60556838617440. Its totient is φ = 5338343884800.

The previous prime is 20102201220107. The next prime is 20102201220163. The reversal of 20102201220120 is 2102210220102.

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 20102201220120.

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, 347519511 + ... + 347577350.

Almost surely, 2^{20102201220120} is an apocalyptic number.

20102201220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102201220120 is an abundant number, since it is smaller than the sum of its proper divisors (40454637397320).

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

20102201220120 is a wasteful number, since it uses less digits than its factorization.

20102201220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695097116 (or 695097112 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20102201220120 its reverse (2102210220102), we get a palindrome (22204411440222).

The spelling of 20102201220120 in words is "twenty trillion, one hundred two billion, two hundred one million, two hundred twenty thousand, one hundred twenty".