1155005421312 has 36 divisors (see below), whose sum is σ = 3073998805640. Its totient is φ = 385001806848.

The previous prime is 1155005421293. The next prime is 1155005421347. The reversal of 1155005421312 is 2131245005511.

It is a super-2 number, since 2×1155005421312² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1155005421312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751955887 + ... + 751957422.

Almost surely, 2^{1155005421312} is an apocalyptic number.

1155005421312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1155005421312 is an abundant number, since it is smaller than the sum of its proper divisors (1918993384328).

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

1155005421312 is an equidigital number, since it uses as much as digits as its factorization.

1155005421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503913328 (or 1503913314 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 1155005421312 in words is "one trillion, one hundred fifty-five billion, five million, four hundred twenty-one thousand, three hundred twelve".