22411021 has 2 divisors, whose sum is σ = 22411022. Its totient is φ = 22411020.

The previous prime is 22411003. The next prime is 22411027. The reversal of 22411021 is 12011422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22221796 + 189225 = 4714^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 22411021 - 2⁷ = 22410893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22410992 and 22411010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22411027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11205510 + 11205511.

It is an arithmetic number, because the mean of its divisors is an integer number (11205511).

Almost surely, 2^22411021 is an apocalyptic number.

It is an amenable number.

22411021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22411021 is an equidigital number, since it uses as much as digits as its factorization.

22411021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 22411021 is about 4734.0279889329. The cubic root of 22411021 is about 281.9381728213.

Adding to 22411021 its reverse (12011422), we get a palindrome (34422443).

The spelling of 22411021 in words is "twenty-two million, four hundred eleven thousand, twenty-one".