20121650022 has 32 divisors (see below), whose sum is σ = 41215182048. Its totient is φ = 6546548736.

The previous prime is 20121649979. The next prime is 20121650039. The reversal of 20121650022 is 22005612102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102553 + ... + 225300.

It is an arithmetic number, because the mean of its divisors is an integer number (1287974439).

Almost surely, 2^20121650022 is an apocalyptic number.

20121650022 is an abundant number, since it is smaller than the sum of its proper divisors (21093532026).

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

20121650022 is a wasteful number, since it uses less digits than its factorization.

20121650022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328104.

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 20121650022 in words is "twenty billion, one hundred twenty-one million, six hundred fifty thousand, twenty-two".