21223113110 has 32 divisors (see below), whose sum is σ = 39252403872. Its totient is φ = 8257374720.

The previous prime is 21223113103. The next prime is 21223113139. The reversal of 21223113110 is 1131132212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1232 + ... + 206028.

It is an arithmetic number, because the mean of its divisors is an integer number (1226637621).

Almost surely, 2^21223113110 is an apocalyptic number.

21223113110 is a deficient number, since it is larger than the sum of its proper divisors (18029290762).

21223113110 is a wasteful number, since it uses less digits than its factorization.

21223113110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205088.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21223113110 its reverse (1131132212), we get a palindrome (22354245322).

The spelling of 21223113110 in words is "twenty-one billion, two hundred twenty-three million, one hundred thirteen thousand, one hundred ten".