2012211999965 has 64 divisors (see below), whose sum is σ = 2672577331200. Its totient is φ = 1448457292800.

The previous prime is 2012211999961. The next prime is 2012211999997. The reversal of 2012211999965 is 5699991122102.

It is not a de Polignac number, because 2012211999965 - 2² = 2012211999961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012211999965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012211999961) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109630229 + ... + 109648581.

It is an arithmetic number, because the mean of its divisors is an integer number (41759020800).

Almost surely, 2^{2012211999965} is an apocalyptic number.

It is an amenable number.

2012211999965 is a deficient number, since it is larger than the sum of its proper divisors (660365331235).

2012211999965 is a wasteful number, since it uses less digits than its factorization.

2012211999965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19098.

The product of its (nonzero) digits is 1574640, while the sum is 56.

The spelling of 2012211999965 in words is "two trillion, twelve billion, two hundred eleven million, nine hundred ninety-nine thousand, nine hundred sixty-five".