1100120121992 has 8 divisors (see below), whose sum is σ = 2062725228750. Its totient is φ = 550060060992.

The previous prime is 1100120121959. The next prime is 1100120122021. The reversal of 1100120121992 is 2991210210011.

It can be written as a sum of positive squares in only one way, i.e., 887752146436 + 212367975556 = 942206^2 + 460834^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68757507617 + ... + 68757507632.

Almost surely, 2^{1100120121992} is an apocalyptic number.

It is an amenable number.

1100120121992 is a deficient number, since it is larger than the sum of its proper divisors (962605106758).

1100120121992 is a wasteful number, since it uses less digits than its factorization.

1100120121992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137515015255 (or 137515015251 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 1100120121992 in words is "one trillion, one hundred billion, one hundred twenty million, one hundred twenty-one thousand, nine hundred ninety-two".