22111330021 has 16 divisors (see below), whose sum is σ = 24371762688. Its totient is φ = 19892876400.

The previous prime is 22111330019. The next prime is 22111330069. The reversal of 22111330021 is 12003311122.

It is a cyclic number.

It is not a de Polignac number, because 22111330021 - 2¹ = 22111330019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111329977 and 22111330004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111330001) 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, 1973766 + ... + 1984936.

It is an arithmetic number, because the mean of its divisors is an integer number (1523235168).

Almost surely, 2^22111330021 is an apocalyptic number.

It is an amenable number.

22111330021 is a deficient number, since it is larger than the sum of its proper divisors (2260432667).

22111330021 is a wasteful number, since it uses less digits than its factorization.

22111330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 22111330021 its reverse (12003311122), we get a palindrome (34114641143).

The spelling of 22111330021 in words is "twenty-two billion, one hundred eleven million, three hundred thirty thousand, twenty-one".