20612559205122 has 32 divisors (see below), whose sum is σ = 41524005888000. Its totient is φ = 6821182672080.

The previous prime is 20612559205099. The next prime is 20612559205151. The reversal of 20612559205122 is 22150295521602.

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, 17450718 + ... + 18594425.

It is an arithmetic number, because the mean of its divisors is an integer number (1297625184000).

Almost surely, 2^{20612559205122} is an apocalyptic number.

20612559205122 is an abundant number, since it is smaller than the sum of its proper divisors (20911446682878).

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

20612559205122 is a wasteful number, since it uses less digits than its factorization.

20612559205122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36045838.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 20612559205122 in words is "twenty trillion, six hundred twelve billion, five hundred fifty-nine million, two hundred five thousand, one hundred twenty-two".