20112749122 has 8 divisors (see below), whose sum is σ = 30222146700. Its totient is φ = 10038700224.

The previous prime is 20112749071. The next prime is 20112749131. The reversal of 20112749122 is 22194721102.

It can be written as a sum of positive squares in 2 ways, for example, as 18154598121 + 1958151001 = 134739^2 + 44251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8835747 + ... + 8838022.

Almost surely, 2^20112749122 is an apocalyptic number.

20112749122 is a deficient number, since it is larger than the sum of its proper divisors (10109397578).

20112749122 is a wasteful number, since it uses less digits than its factorization.

20112749122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17674340.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 20112749122 in words is "twenty billion, one hundred twelve million, seven hundred forty-nine thousand, one hundred twenty-two".