22852021 has 2 divisors, whose sum is σ = 22852022. Its totient is φ = 22852020.

The previous prime is 22852007. The next prime is 22852031. The reversal of 22852021 is 12025822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22667121 + 184900 = 4761^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 22852021 - 2¹¹ = 22849973 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22851983 and 22852001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22852031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11426010 + 11426011.

It is an arithmetic number, because the mean of its divisors is an integer number (11426011).

Almost surely, 2^22852021 is an apocalyptic number.

It is an amenable number.

22852021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22852021 is an equidigital number, since it uses as much as digits as its factorization.

22852021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 22852021 is about 4780.3787506849. The cubic root of 22852021 is about 283.7754829721.

Adding to 22852021 its reverse (12025822), we get a palindrome (34877843).

The spelling of 22852021 in words is "twenty-two million, eight hundred fifty-two thousand, twenty-one".