122221139200 has 54 divisors (see below), whose sum is σ = 302516432414. Its totient is φ = 48888453120.

The previous prime is 122221139191. The next prime is 122221139233. The reversal of 122221139200 is 2931122221.

It can be written as a sum of positive squares in 3 ways, for example, as 12166144 + 122208973056 = 3488^2 + 349584^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9542127 + ... + 9554926.

Almost surely, 2^122221139200 is an apocalyptic number.

122221139200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221139200 is an abundant number, since it is smaller than the sum of its proper divisors (180295293214).

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

122221139200 is an equidigital number, since it uses as much as digits as its factorization.

122221139200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19097079 (or 19097060 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 122221139200 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred thirty-nine thousand, two hundred".