21110233374 has 24 divisors (see below), whose sum is σ = 45742385520. Its totient is φ = 7036198848.

The previous prime is 21110233373. The next prime is 21110233379. The reversal of 21110233374 is 47333201112.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110233373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242374 + ... + 317750.

It is an arithmetic number, because the mean of its divisors is an integer number (1905932730).

Almost surely, 2^21110233374 is an apocalyptic number.

21110233374 is an abundant number, since it is smaller than the sum of its proper divisors (24632152146).

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

21110233374 is a wasteful number, since it uses less digits than its factorization.

21110233374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90944 (or 90941 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

Adding to 21110233374 its reverse (47333201112), we get a palindrome (68443434486).

The spelling of 21110233374 in words is "twenty-one billion, one hundred ten million, two hundred thirty-three thousand, three hundred seventy-four".