20112130212100 has 36 divisors (see below), whose sum is σ = 44075434686948. Its totient is φ = 7965200080000.

The previous prime is 20112130212059. The next prime is 20112130212101. The reversal of 20112130212100 is 121203121102.

It can be written as a sum of positive squares in 6 ways, for example, as 1675222844416 + 18436907367684 = 1294304^2 + 4293822^2 .

It is not an unprimeable number, because it can be changed into a prime (20112130212101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 995639911 + ... + 995660110.

It is an arithmetic number, because the mean of its divisors is an integer number (1224317630193).

Almost surely, 2^{20112130212100} is an apocalyptic number.

20112130212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112130212100 is an abundant number, since it is smaller than the sum of its proper divisors (23963304474848).

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

20112130212100 is a wasteful number, since it uses less digits than its factorization.

20112130212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991300136 (or 1991300129 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20112130212100 its reverse (121203121102), we get a palindrome (20233333333202).

The spelling of 20112130212100 in words is "twenty trillion, one hundred twelve billion, one hundred thirty million, two hundred twelve thousand, one hundred".