21112242198 has 32 divisors (see below), whose sum is σ = 44491914240. Its totient is φ = 6660260640.

The previous prime is 21112242187. The next prime is 21112242199. The reversal of 21112242198 is 89124221112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112242199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19536 + ... + 206412.

It is an arithmetic number, because the mean of its divisors is an integer number (1390372320).

Almost surely, 2^21112242198 is an apocalyptic number.

21112242198 is an abundant number, since it is smaller than the sum of its proper divisors (23379672042).

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

21112242198 is a wasteful number, since it uses less digits than its factorization.

21112242198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187892.

The product of its digits is 4608, while the sum is 33.

The spelling of 21112242198 in words is "twenty-one billion, one hundred twelve million, two hundred forty-two thousand, one hundred ninety-eight".