22460021 has 2 divisors, whose sum is σ = 22460022. Its totient is φ = 22460020.

The previous prime is 22460003. The next prime is 22460023. The reversal of 22460021 is 12006422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11662225 + 10797796 = 3415^2 + 3286^2 .

It is a cyclic number.

It is not a de Polignac number, because 22460021 - 2¹⁴ = 22443637 is a prime.

Together with 22460023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22460023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11230010 + 11230011.

It is an arithmetic number, because the mean of its divisors is an integer number (11230011).

Almost surely, 2^22460021 is an apocalyptic number.

It is an amenable number.

22460021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22460021 is an equidigital number, since it uses as much as digits as its factorization.

22460021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22460021 is about 4739.2004599932. The cubic root of 22460021 is about 282.1435020686.

Adding to 22460021 its reverse (12006422), we get a palindrome (34466443).

The spelling of 22460021 in words is "twenty-two million, four hundred sixty thousand, twenty-one".