22022641 has 2 divisors, whose sum is σ = 22022642. Its totient is φ = 22022640.

The previous prime is 22022603. The next prime is 22022677. The reversal of 22022641 is 14622022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21893041 + 129600 = 4679^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 22022641 - 2¹³ = 22014449 is a prime.

It is a super-2 number, since 2×22022641² = 969993433229762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22022681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011320 + 11011321.

It is an arithmetic number, because the mean of its divisors is an integer number (11011321).

Almost surely, 2^22022641 is an apocalyptic number.

It is an amenable number.

22022641 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022641 is an equidigital number, since it uses as much as digits as its factorization.

22022641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 22022641 is about 4692.8286778871. The cubic root of 22022641 is about 280.3000227955.

Adding to 22022641 its reverse (14622022), we get a palindrome (36644663).

The spelling of 22022641 in words is "twenty-two million, twenty-two thousand, six hundred forty-one".