1125221266056 has 64 divisors (see below), whose sum is σ = 2825651646720. Its totient is φ = 373397713920.

The previous prime is 1125221265991. The next prime is 1125221266061. The reversal of 1125221266056 is 6506621225211.

It is a super-2 number, since 2×1125221266056² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4694566 + ... + 4928426.

It is an arithmetic number, because the mean of its divisors is an integer number (44150806980).

Almost surely, 2^{1125221266056} is an apocalyptic number.

It is an amenable number.

1125221266056 is an abundant number, since it is smaller than the sum of its proper divisors (1700430380664).

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

1125221266056 is a wasteful number, since it uses less digits than its factorization.

1125221266056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234766 (or 234762 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 1125221266056 in words is "one trillion, one hundred twenty-five billion, two hundred twenty-one million, two hundred sixty-six thousand, fifty-six".