20400313222200 has 96 divisors (see below), whose sum is σ = 63243236995200. Its totient is φ = 5439888600960.

The previous prime is 20400313222169. The next prime is 20400313222249. The reversal of 20400313222200 is 222231300402.

20400313222200 = 225634² + 225635² + ... + 226033².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16552549 + ... + 17742251.

It is an arithmetic number, because the mean of its divisors is an integer number (658783718700).

Almost surely, 2^{20400313222200} is an apocalyptic number.

20400313222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20400313222200 is an abundant number, since it is smaller than the sum of its proper divisors (42842923773000).

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

20400313222200 is a wasteful number, since it uses less digits than its factorization.

20400313222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218301 (or 1218292 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20400313222200 its reverse (222231300402), we get a palindrome (20622544522602).

The spelling of 20400313222200 in words is "twenty trillion, four hundred billion, three hundred thirteen million, two hundred twenty-two thousand, two hundred".