2021102220120 has 64 divisors (see below), whose sum is σ = 6080483293920. Its totient is φ = 537433780224.

The previous prime is 2021102220107. The next prime is 2021102220139. The reversal of 2021102220120 is 210222011202.

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 2021102220120.

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, 23813899 + ... + 23898618.

Almost surely, 2^{2021102220120} is an apocalyptic number.

2021102220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021102220120 is an abundant number, since it is smaller than the sum of its proper divisors (4059381073800).

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

2021102220120 is a wasteful number, since it uses less digits than its factorization.

2021102220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47712884 (or 47712880 counting only the distinct ones).

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

Adding to 2021102220120 its reverse (210222011202), we get a palindrome (2231324231322).

The spelling of 2021102220120 in words is "two trillion, twenty-one billion, one hundred two million, two hundred twenty thousand, one hundred twenty".