121338774425 has 12 divisors (see below), whose sum is σ = 164138269776. Its totient is φ = 88246381200.

The previous prime is 121338774419. The next prime is 121338774437. The reversal of 121338774425 is 524477833121.

It is a de Polignac number, because none of the positive numbers 2^k-121338774425 is a prime.

It is a super-2 number, since 2×121338774425² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121338774425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220615679 + ... + 220616228.

It is an arithmetic number, because the mean of its divisors is an integer number (13678189148).

Almost surely, 2^121338774425 is an apocalyptic number.

It is an amenable number.

121338774425 is a deficient number, since it is larger than the sum of its proper divisors (42799495351).

121338774425 is a wasteful number, since it uses less digits than its factorization.

121338774425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441231928 (or 441231923 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The spelling of 121338774425 in words is "one hundred twenty-one billion, three hundred thirty-eight million, seven hundred seventy-four thousand, four hundred twenty-five".