20101321120 has 24 divisors (see below), whose sum is σ = 47489371524. Its totient is φ = 8040528384.

The previous prime is 20101321117. The next prime is 20101321133. The reversal of 20101321120 is 2112310102.

It can be written as a sum of positive squares in 2 ways, for example, as 19990566544 + 110754576 = 141388^2 + 10524^2 .

It is a super-2 number, since 2×20101321120² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20101321120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62816469 + ... + 62816788.

Almost surely, 2^20101321120 is an apocalyptic number.

20101321120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101321120 is an abundant number, since it is smaller than the sum of its proper divisors (27388050404).

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

20101321120 is a wasteful number, since it uses less digits than its factorization.

20101321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125633272 (or 125633264 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20101321120 its reverse (2112310102), we get a palindrome (22213631222).

The spelling of 20101321120 in words is "twenty billion, one hundred one million, three hundred twenty-one thousand, one hundred twenty".