20100011122120 has 16 divisors (see below), whose sum is σ = 45225025024860. Its totient is φ = 8040004448832.

The previous prime is 20100011122073. The next prime is 20100011122159. The reversal of 20100011122120 is 2122111000102.

It can be written as a sum of positive squares in 2 ways, for example, as 17619392422116 + 2480618700004 = 4197546^2 + 1574998^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20100011122120.

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, 251250138987 + ... + 251250139066.

Almost surely, 2^{20100011122120} is an apocalyptic number.

20100011122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100011122120 is an abundant number, since it is smaller than the sum of its proper divisors (25125013902740).

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

20100011122120 is a wasteful number, since it uses less digits than its factorization.

20100011122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502500278064 (or 502500278060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20100011122120 its reverse (2122111000102), we get a palindrome (22222122122222).

The spelling of 20100011122120 in words is "twenty trillion, one hundred billion, eleven million, one hundred twenty-two thousand, one hundred twenty".