22474021 has 2 divisors, whose sum is σ = 22474022. Its totient is φ = 22474020.

The previous prime is 22474019. The next prime is 22474031. The reversal of 22474021 is 12047422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13771521 + 8702500 = 3711^2 + 2950^2 .

It is a cyclic number.

It is not a de Polignac number, because 22474021 - 2¹ = 22474019 is a prime.

It is a super-3 number, since 3×22474021³ (a number of 23 digits) contains 333 as substring.

Together with 22474019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22473983 and 22474001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22474031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11237010 + 11237011.

It is an arithmetic number, because the mean of its divisors is an integer number (11237011).

Almost surely, 2^22474021 is an apocalyptic number.

It is an amenable number.

22474021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22474021 is an equidigital number, since it uses as much as digits as its factorization.

22474021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 22474021 is about 4740.6772722893. The cubic root of 22474021 is about 282.2021127082.

The spelling of 22474021 in words is "twenty-two million, four hundred seventy-four thousand, twenty-one".