1011122199965 has 4 divisors (see below), whose sum is σ = 1213346639964. Its totient is φ = 808897759968.

The previous prime is 1011122199947. The next prime is 1011122200001. The reversal of 1011122199965 is 5699912211101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 788590176676 + 222532023289 = 888026^2 + 471733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011122199965 - 2²² = 1011118005661 is a prime.

It is a super-2 number, since 2×1011122199965² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

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, 101112219992 + ... + 101112220001.

It is an arithmetic number, because the mean of its divisors is an integer number (303336659991).

Almost surely, 2^{1011122199965} is an apocalyptic number.

It is an amenable number.

1011122199965 is a deficient number, since it is larger than the sum of its proper divisors (202224439999).

1011122199965 is an equidigital number, since it uses as much as digits as its factorization.

1011122199965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202224439998.

The product of its (nonzero) digits is 87480, while the sum is 47.

The spelling of 1011122199965 in words is "one trillion, eleven billion, one hundred twenty-two million, one hundred ninety-nine thousand, nine hundred sixty-five".