2203132312100 has 72 divisors (see below), whose sum is σ = 4819771593000. Its totient is φ = 874085632000.

The previous prime is 2203132312061. The next prime is 2203132312127. The reversal of 2203132312100 is 12132313022.

It can be written as a sum of positive squares in 12 ways, for example, as 1253844541504 + 949287770596 = 1119752^2 + 974314^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10339436 + ... + 10550364.

It is an arithmetic number, because the mean of its divisors is an integer number (66941272125).

Almost surely, 2^{2203132312100} is an apocalyptic number.

2203132312100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2203132312100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2409885796500).

2203132312100 is an abundant number, since it is smaller than the sum of its proper divisors (2616639280900).

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

2203132312100 is a wasteful number, since it uses less digits than its factorization.

2203132312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211793 (or 211786 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2203132312100 its reverse (12132313022), we get a palindrome (2215264625122).

The spelling of 2203132312100 in words is "two trillion, two hundred three billion, one hundred thirty-two million, three hundred twelve thousand, one hundred".