21202310234 has 64 divisors (see below), whose sum is σ = 38127801600. Its totient is φ = 8651155968.

The previous prime is 21202310219. The next prime is 21202310267. The reversal of 21202310234 is 43201320212.

It is a super-2 number, since 2×21202310234² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8858942 + ... + 8861334.

It is an arithmetic number, because the mean of its divisors is an integer number (595746900).

Almost surely, 2^21202310234 is an apocalyptic number.

21202310234 is a deficient number, since it is larger than the sum of its proper divisors (16925491366).

21202310234 is a wasteful number, since it uses less digits than its factorization.

21202310234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21202310234 its reverse (43201320212), we get a palindrome (64403630446).

The spelling of 21202310234 in words is "twenty-one billion, two hundred two million, three hundred ten thousand, two hundred thirty-four".