21022332111 has 16 divisors (see below), whose sum is σ = 33975486720. Its totient is φ = 12740807160.

The previous prime is 21022332103. The next prime is 21022332113. The reversal of 21022332111 is 11123322012.

It is not a de Polignac number, because 21022332111 - 2³ = 21022332103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022332113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35390835 + ... + 35391428.

It is an arithmetic number, because the mean of its divisors is an integer number (2123467920).

Almost surely, 2^21022332111 is an apocalyptic number.

21022332111 is a deficient number, since it is larger than the sum of its proper divisors (12953154609).

21022332111 is a wasteful number, since it uses less digits than its factorization.

21022332111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70782283 (or 70782277 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21022332111 its reverse (11123322012), we get a palindrome (32145654123).

The spelling of 21022332111 in words is "twenty-one billion, twenty-two million, three hundred thirty-two thousand, one hundred eleven".