22210211021 has 2 divisors, whose sum is σ = 22210211022. Its totient is φ = 22210211020.

The previous prime is 22210210999. The next prime is 22210211039. The reversal of 22210211021 is 12011201222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21917322025 + 292888996 = 148045^2 + 17114^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210211021 - 2²² = 22206016717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22210210987 and 22210211005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22210211321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105105510 + 11105105511.

It is an arithmetic number, because the mean of its divisors is an integer number (11105105511).

Almost surely, 2^22210211021 is an apocalyptic number.

It is an amenable number.

22210211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210211021 is an equidigital number, since it uses as much as digits as its factorization.

22210211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22210211021 its reverse (12011201222), we get a palindrome (34221412243).

The spelling of 22210211021 in words is "twenty-two billion, two hundred ten million, two hundred eleven thousand, twenty-one".