21122112194 has 8 divisors (see below), whose sum is σ = 31765893120. Its totient is φ = 10533481156.

The previous prime is 21122112191. The next prime is 21122112203. The reversal of 21122112194 is 49121122112.

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

It is a super-2 number, since 2×21122112194² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122112191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13786514 + ... + 13788045.

It is an arithmetic number, because the mean of its divisors is an integer number (3970736640).

Almost surely, 2^21122112194 is an apocalyptic number.

21122112194 is a deficient number, since it is larger than the sum of its proper divisors (10643780926).

21122112194 is a wasteful number, since it uses less digits than its factorization.

21122112194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27574944.

The product of its digits is 576, while the sum is 26.

The spelling of 21122112194 in words is "twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred ninety-four".