122047261440 has 288 divisors, whose sum is σ = 421798008576. Its totient is φ = 29897441280.

The previous prime is 122047261429. The next prime is 122047261477. The reversal of 122047261440 is 44162740221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10527327 + ... + 10538913.

Almost surely, 2^122047261440 is an apocalyptic number.

122047261440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122047261440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210899004288).

122047261440 is an abundant number, since it is smaller than the sum of its proper divisors (299750747136).

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

122047261440 is a wasteful number, since it uses less digits than its factorization.

122047261440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11835 (or 11821 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The spelling of 122047261440 in words is "one hundred twenty-two billion, forty-seven million, two hundred sixty-one thousand, four hundred forty".