121231565600448 has 56 divisors (see below), whose sum is σ = 320760025707520. Its totient is φ = 40410331833600.

The previous prime is 121231565600417. The next prime is 121231565600477. The reversal of 121231565600448 is 844006565132121.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 121231565600397 and 121231565600406.

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, 42896433 + ... + 45635151.

It is an arithmetic number, because the mean of its divisors is an integer number (5727857601920).

Almost surely, 2^{121231565600448} is an apocalyptic number.

It is an amenable number.

121231565600448 is an abundant number, since it is smaller than the sum of its proper divisors (199528460107072).

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

121231565600448 is a wasteful number, since it uses less digits than its factorization.

121231565600448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969285 (or 2969275 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 121231565600448 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, five hundred sixty-five million, six hundred thousand, four hundred forty-eight".