2166016215012 has 96 divisors (see below), whose sum is σ = 5706372725760. Its totient is φ = 634468222080.

The previous prime is 2166016214969. The next prime is 2166016215043. The reversal of 2166016215012 is 2105126106612.

It is a super-2 number, since 2×2166016215012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 673462 + ... + 2187597.

It is an arithmetic number, because the mean of its divisors is an integer number (59441382560).

Almost surely, 2^{2166016215012} is an apocalyptic number.

It is an amenable number.

2166016215012 is an abundant number, since it is smaller than the sum of its proper divisors (3540356510748).

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

2166016215012 is a wasteful number, since it uses less digits than its factorization.

2166016215012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861313 (or 2861311 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 2166016215012 in words is "two trillion, one hundred sixty-six billion, sixteen million, two hundred fifteen thousand, twelve".