22020110021 has 48 divisors (see below), whose sum is σ = 28826979840. Its totient is φ = 16423767360.

The previous prime is 22020110003. The next prime is 22020110111. The reversal of 22020110021 is 12001102022.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22020110021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020109984 and 22020110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020110821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4740326 + ... + 4744968.

It is an arithmetic number, because the mean of its divisors is an integer number (600562080).

Almost surely, 2^22020110021 is an apocalyptic number.

It is an amenable number.

22020110021 is a deficient number, since it is larger than the sum of its proper divisors (6806869819).

22020110021 is a wasteful number, since it uses less digits than its factorization.

22020110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4906 (or 4893 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22020110021 its reverse (12001102022), we get a palindrome (34021212043).

The spelling of 22020110021 in words is "twenty-two billion, twenty million, one hundred ten thousand, twenty-one".