1101387256512 has 56 divisors (see below), whose sum is σ = 2916345004992. Its totient is φ = 366844627200.

The previous prime is 1101387256483. The next prime is 1101387256601. The reversal of 1101387256512 is 2156527831011.

It is a super-2 number, since 2×1101387256512² (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 7 ways as a sum of consecutive naturals, for example, 1973814 + ... + 2469557.

Almost surely, 2^{1101387256512} is an apocalyptic number.

1101387256512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101387256512 is an abundant number, since it is smaller than the sum of its proper divisors (1814957748480).

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

1101387256512 is a wasteful number, since it uses less digits than its factorization.

1101387256512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444677 (or 4444667 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 1101387256512 in words is "one trillion, one hundred one billion, three hundred eighty-seven million, two hundred fifty-six thousand, five hundred twelve".