2122012211985 has 24 divisors (see below), whose sum is σ = 3777564084840. Its totient is φ = 1101152282112.

The previous prime is 2122012211941. The next prime is 2122012211999. The reversal of 2122012211985 is 5891122102212.

2122012211985 is a `hidden beast` number, since 21 + 220 + 1 + 221 + 198 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 410174921601 + 1711837290384 = 640449^2 + 1308372^2 .

It is not a de Polignac number, because 2122012211985 - 2¹⁷ = 2122012080913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637239240 + ... + 637242569.

It is an arithmetic number, because the mean of its divisors is an integer number (157398503535).

Almost surely, 2^{2122012211985} is an apocalyptic number.

It is an amenable number.

2122012211985 is a deficient number, since it is larger than the sum of its proper divisors (1655551872855).

2122012211985 is a wasteful number, since it uses less digits than its factorization.

2122012211985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274481857 (or 1274481854 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 2122012211985 in words is "two trillion, one hundred twenty-two billion, twelve million, two hundred eleven thousand, nine hundred eighty-five".