21211113110 has 16 divisors (see below), whose sum is σ = 41650913232. Its totient is φ = 7713132000.

The previous prime is 21211113109. The next prime is 21211113149. The reversal of 21211113110 is 1131111212.

It is a super-2 number, since 2×21211113110² (a number of 21 digits) contains 22 as substring.

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, 96414041 + ... + 96414260.

It is an arithmetic number, because the mean of its divisors is an integer number (2603182077).

Almost surely, 2^21211113110 is an apocalyptic number.

21211113110 is a deficient number, since it is larger than the sum of its proper divisors (20439800122).

21211113110 is a wasteful number, since it uses less digits than its factorization.

21211113110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192828319.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 21211113110 its reverse (1131111212), we get a palindrome (22342224322).

The spelling of 21211113110 in words is "twenty-one billion, two hundred eleven million, one hundred thirteen thousand, one hundred ten".