20122104400 has 60 divisors (see below), whose sum is σ = 51187099932. Its totient is φ = 7575377920.

The previous prime is 20122104397. The next prime is 20122104421. The reversal of 20122104400 is 440122102.

It can be written as a sum of positive squares in 6 ways, for example, as 2129637904 + 17992466496 = 46148^2 + 134136^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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 11 ways as a sum of consecutive naturals, for example, 1472767 + ... + 1486366.

Almost surely, 2^20122104400 is an apocalyptic number.

20122104400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122104400 is an abundant number, since it is smaller than the sum of its proper divisors (31064995532).

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

20122104400 is a wasteful number, since it uses less digits than its factorization.

20122104400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959168 (or 2959157 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20122104400 its reverse (440122102), we get a palindrome (20562226502).

The spelling of 20122104400 in words is "twenty billion, one hundred twenty-two million, one hundred four thousand, four hundred".