21010320201120 has 48 divisors (see below), whose sum is σ = 66182508635040. Its totient is φ = 5602752053504.

The previous prime is 21010320201109. The next prime is 21010320201137. The reversal of 21010320201120 is 2110202301012.

It is a tau number, because it is divible by the number of its divisors (48).

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 21010320201120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21885749730 + ... + 21885750689.

It is an arithmetic number, because the mean of its divisors is an integer number (1378802263230).

Almost surely, 2^{21010320201120} is an apocalyptic number.

21010320201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010320201120 is an abundant number, since it is smaller than the sum of its proper divisors (45172188433920).

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

21010320201120 is a wasteful number, since it uses less digits than its factorization.

21010320201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43771500437 (or 43771500429 counting only the distinct ones).

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

Adding to 21010320201120 its reverse (2110202301012), we get a palindrome (23120522502132).

The spelling of 21010320201120 in words is "twenty-one trillion, ten billion, three hundred twenty million, two hundred one thousand, one hundred twenty".