22211011021 has 2 divisors, whose sum is σ = 22211011022. Its totient is φ = 22211011020.

The previous prime is 22211010961. The next prime is 22211011027. The reversal of 22211011021 is 12011011222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12862054921 + 9348956100 = 113411^2 + 96690^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211011021 - 2⁹ = 22211010509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22211010992 and 22211011010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22211011027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105505510 + 11105505511.

It is an arithmetic number, because the mean of its divisors is an integer number (11105505511).

Almost surely, 2^22211011021 is an apocalyptic number.

It is an amenable number.

22211011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211011021 is an equidigital number, since it uses as much as digits as its factorization.

22211011021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22211011021 its reverse (12011011222), we get a palindrome (34222022243).

The spelling of 22211011021 in words is "twenty-two billion, two hundred eleven million, eleven thousand, twenty-one".