122216391900 has 54 divisors (see below), whose sum is σ = 383080493432. Its totient is φ = 32591037600.

The previous prime is 122216391883. The next prime is 122216391911. The reversal of 122216391900 is 9193612221.

122216391900 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 1 + 639 + 19 + 0 + 0 = 666.

It is a super-2 number, since 2×122216391900² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67897096 + ... + 67898895.

Almost surely, 2^122216391900 is an apocalyptic number.

122216391900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122216391900 is an abundant number, since it is smaller than the sum of its proper divisors (260864101532).

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

122216391900 is a wasteful number, since it uses less digits than its factorization.

122216391900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135796011 (or 135796001 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 122216391900 in words is "one hundred twenty-two billion, two hundred sixteen million, three hundred ninety-one thousand, nine hundred".