22112211021 has 16 divisors (see below), whose sum is σ = 29597568000. Its totient is φ = 14684212800.

The previous prime is 22112211013. The next prime is 22112211089. The reversal of 22112211021 is 12011221122.

It is not a de Polignac number, because 22112211021 - 2³ = 22112211013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112211221) 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, 2411796 + ... + 2420946.

It is an arithmetic number, because the mean of its divisors is an integer number (1849848000).

Almost surely, 2^22112211021 is an apocalyptic number.

It is an amenable number.

22112211021 is a deficient number, since it is larger than the sum of its proper divisors (7485356979).

22112211021 is a wasteful number, since it uses less digits than its factorization.

22112211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12196.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22112211021 its reverse (12011221122), we get a palindrome (34123432143).

The spelling of 22112211021 in words is "twenty-two billion, one hundred twelve million, two hundred eleven thousand, twenty-one".