20002212121168 has 40 divisors (see below), whose sum is σ = 39099547343808. Its totient is φ = 9912016783872.

The previous prime is 20002212121081. The next prime is 20002212121169. The reversal of 20002212121168 is 86112121220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002212121169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31219821 + ... + 31854067.

Almost surely, 2^{20002212121168} is an apocalyptic number.

It is an amenable number.

20002212121168 is a deficient number, since it is larger than the sum of its proper divisors (19097335222640).

20002212121168 is a wasteful number, since it uses less digits than its factorization.

20002212121168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651811 (or 651805 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The spelling of 20002212121168 in words is "twenty trillion, two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred sixty-eight".