21301321123204 has 12 divisors (see below), whose sum is σ = 37298649878224. Its totient is φ = 10644564015144.

The previous prime is 21301321123171. The next prime is 21301321123219. The reversal of 21301321123204 is 40232112310312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524128754 + ... + 1524142729.

Almost surely, 2^{21301321123204} is an apocalyptic number.

It is an amenable number.

21301321123204 is a deficient number, since it is larger than the sum of its proper divisors (15997328755020).

21301321123204 is a wasteful number, since it uses less digits than its factorization.

21301321123204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048273234 (or 3048273232 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21301321123204 its reverse (40232112310312), we get a palindrome (61533433433516).

The spelling of 21301321123204 in words is "twenty-one trillion, three hundred one billion, three hundred twenty-one million, one hundred twenty-three thousand, two hundred four".