2165112537212 has 24 divisors (see below), whose sum is σ = 3869961338880. Its totient is φ = 1059414041840.

The previous prime is 2165112537199. The next prime is 2165112537223. The reversal of 2165112537212 is 2127352115612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252589 + ... + 2428827.

It is an arithmetic number, because the mean of its divisors is an integer number (161248389120).

Almost surely, 2^{2165112537212} is an apocalyptic number.

It is an amenable number.

2165112537212 is a deficient number, since it is larger than the sum of its proper divisors (1704848801668).

2165112537212 is a wasteful number, since it uses less digits than its factorization.

2165112537212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186081 (or 1186079 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The spelling of 2165112537212 in words is "two trillion, one hundred sixty-five billion, one hundred twelve million, five hundred thirty-seven thousand, two hundred twelve".