2100023212212 has 18 divisors (see below), whose sum is σ = 5308392008738. Its totient is φ = 700007737392.

The previous prime is 2100023212187. The next prime is 2100023212223. The reversal of 2100023212212 is 2122123200012.

2100023212212 is a `hidden beast` number, since 210 + 0 + 0 + 232 + 1 + 221 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1878752696976 + 221270515236 = 1370676^2 + 470394^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29166989023 + ... + 29166989094.

Almost surely, 2^{2100023212212} is an apocalyptic number.

It is an amenable number.

2100023212212 is an abundant number, since it is smaller than the sum of its proper divisors (3208368796526).

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

2100023212212 is a wasteful number, since it uses less digits than its factorization.

2100023212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58333978127 (or 58333978122 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2100023212212 its reverse (2122123200012), we get a palindrome (4222146412224).

The spelling of 2100023212212 in words is "two trillion, one hundred billion, twenty-three million, two hundred twelve thousand, two hundred twelve".