122147436720 has 40 divisors (see below), whose sum is σ = 378657054576. Its totient is φ = 32572649728.

The previous prime is 122147436679. The next prime is 122147436731. The reversal of 122147436720 is 27634741221.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254473587 + ... + 254474066.

Almost surely, 2^122147436720 is an apocalyptic number.

122147436720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122147436720 is an abundant number, since it is smaller than the sum of its proper divisors (256509617856).

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

122147436720 is a wasteful number, since it uses less digits than its factorization.

122147436720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508947669 (or 508947663 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 122147436720 in words is "one hundred twenty-two billion, one hundred forty-seven million, four hundred thirty-six thousand, seven hundred twenty".