20315310221200 has 60 divisors (see below), whose sum is σ = 48808804312260. Its totient is φ = 8125912391680.

The previous prime is 20315310221179. The next prime is 20315310221347. The reversal of 20315310221200 is 212201351302.

It can be written as a sum of positive squares in 6 ways, for example, as 550421545216 + 19764888675984 = 741904^2 + 4445772^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15185832 + ... + 16469368.

It is an arithmetic number, because the mean of its divisors is an integer number (813480071871).

Almost surely, 2^{20315310221200} is an apocalyptic number.

20315310221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20315310221200 is an abundant number, since it is smaller than the sum of its proper divisors (28493494091060).

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

20315310221200 is a wasteful number, since it uses less digits than its factorization.

20315310221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323124 (or 1323113 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20315310221200 its reverse (212201351302), we get a palindrome (20527511572502).

The spelling of 20315310221200 in words is "twenty trillion, three hundred fifteen billion, three hundred ten million, two hundred twenty-one thousand, two hundred".