21103122230 has 16 divisors (see below), whose sum is σ = 39295469520. Its totient is φ = 8150171232.

The previous prime is 21103122223. The next prime is 21103122253. The reversal of 21103122230 is 3222130112.

It is a junction number, because it is equal to n+sod(n) for n = 21103122199 and 21103122208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36384404 + ... + 36384983.

It is an arithmetic number, because the mean of its divisors is an integer number (2455966845).

Almost surely, 2^21103122230 is an apocalyptic number.

21103122230 is a deficient number, since it is larger than the sum of its proper divisors (18192347290).

21103122230 is a wasteful number, since it uses less digits than its factorization.

21103122230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72769423.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21103122230 its reverse (3222130112), we get a palindrome (24325252342).

The spelling of 21103122230 in words is "twenty-one billion, one hundred three million, one hundred twenty-two thousand, two hundred thirty".