20112113998 has 4 divisors (see below), whose sum is σ = 30168171000. Its totient is φ = 10056056998.

The previous prime is 20112113969. The next prime is 20112113999. The reversal of 20112113998 is 89931121102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89931121102 = 2 ⋅44965560551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112113999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028028498 + ... + 5028028501.

It is an arithmetic number, because the mean of its divisors is an integer number (7542042750).

Almost surely, 2^20112113998 is an apocalyptic number.

20112113998 is a deficient number, since it is larger than the sum of its proper divisors (10056057002).

20112113998 is a wasteful number, since it uses less digits than its factorization.

20112113998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056057001.

The product of its (nonzero) digits is 7776, while the sum is 37.

The spelling of 20112113998 in words is "twenty billion, one hundred twelve million, one hundred thirteen thousand, nine hundred ninety-eight".