20157135107122 has 16 divisors (see below), whose sum is σ = 32582547005400. Its totient is φ = 9297287108352.

The previous prime is 20157135107119. The next prime is 20157135107147. The reversal of 20157135107122 is 22170153175102.

It can be written as a sum of positive squares in 4 ways, for example, as 8922712642281 + 11234422464841 = 2987091^2 + 3351779^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250209703 + ... + 250290250.

Almost surely, 2^{20157135107122} is an apocalyptic number.

20157135107122 is a deficient number, since it is larger than the sum of its proper divisors (12425411898278).

20157135107122 is a wasteful number, since it uses less digits than its factorization.

20157135107122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500501517.

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 20157135107122 in words is "twenty trillion, one hundred fifty-seven billion, one hundred thirty-five million, one hundred seven thousand, one hundred twenty-two".