1125721049112 has 96 divisors (see below), whose sum is σ = 3332938752000. Its totient is φ = 340415309760.

The previous prime is 1125721049087. The next prime is 1125721049113. The reversal of 1125721049112 is 2119401275211.

It is a happy number.

1125721049112 is a `hidden beast` number, since 112 + 57 + 2 + 1 + 0 + 491 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125721049113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1104312 + ... + 1863047.

It is an arithmetic number, because the mean of its divisors is an integer number (34718112000).

Almost surely, 2^{1125721049112} is an apocalyptic number.

1125721049112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1125721049112 is an abundant number, since it is smaller than the sum of its proper divisors (2207217702888).

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

1125721049112 is a wasteful number, since it uses less digits than its factorization.

1125721049112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967861 (or 2967854 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 1125721049112 in words is "one trillion, one hundred twenty-five billion, seven hundred twenty-one million, forty-nine thousand, one hundred twelve".