21022111130 has 16 divisors (see below), whose sum is σ = 37841678280. Its totient is φ = 8408427072.

The previous prime is 21022111111. The next prime is 21022111163. The reversal of 21022111130 is 3111122012.

It can be written as a sum of positive squares in 4 ways, for example, as 18368109841 + 2654001289 = 135529^2 + 51517^2 .

It is a Curzon 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, 234236 + ... + 311304.

Almost surely, 2^21022111130 is an apocalyptic number.

21022111130 is a deficient number, since it is larger than the sum of its proper divisors (16819567150).

21022111130 is a wasteful number, since it uses less digits than its factorization.

21022111130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104353.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21022111130 its reverse (3111122012), we get a palindrome (24133233142).

The spelling of 21022111130 in words is "twenty-one billion, twenty-two million, one hundred eleven thousand, one hundred thirty".