21230113174 has 4 divisors (see below), whose sum is σ = 31845169764. Its totient is φ = 10615056586.

The previous prime is 21230113147. The next prime is 21230113231. The reversal of 21230113174 is 47131103212.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×21230113174³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5307528292 + ... + 5307528295.

It is an arithmetic number, because the mean of its divisors is an integer number (7961292441).

Almost surely, 2^21230113174 is an apocalyptic number.

21230113174 is a deficient number, since it is larger than the sum of its proper divisors (10615056590).

21230113174 is a wasteful number, since it uses less digits than its factorization.

21230113174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10615056589.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 21230113174 its reverse (47131103212), we get a palindrome (68361216386).

The spelling of 21230113174 in words is "twenty-one billion, two hundred thirty million, one hundred thirteen thousand, one hundred seventy-four".