1121065320564 has 36 divisors (see below), whose sum is σ = 3238633149024. Its totient is φ = 320304377232.

The previous prime is 1121065320541. The next prime is 1121065320607. The reversal of 1121065320564 is 4650235601211.

1121065320564 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 0 + 65 + 32 + 0 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2224335702 + ... + 2224336205.

Almost surely, 2^{1121065320564} is an apocalyptic number.

1121065320564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1121065320564 is an abundant number, since it is smaller than the sum of its proper divisors (2117567828460).

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

1121065320564 is a wasteful number, since it uses less digits than its factorization.

1121065320564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448671924 (or 4448671919 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 1121065320564 in words is "one trillion, one hundred twenty-one billion, sixty-five million, three hundred twenty thousand, five hundred sixty-four".