22701421 has 2 divisors, whose sum is σ = 22701422. Its totient is φ = 22701420.

The previous prime is 22701401. The next prime is 22701431. The reversal of 22701421 is 12410722.

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., 14516100 + 8185321 = 3810^2 + 2861^2 .

It is a cyclic number.

It is not a de Polignac number, because 22701421 - 2⁵ = 22701389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22701401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11350710 + 11350711.

It is an arithmetic number, because the mean of its divisors is an integer number (11350711).

Almost surely, 2^22701421 is an apocalyptic number.

It is an amenable number.

22701421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22701421 is an equidigital number, since it uses as much as digits as its factorization.

22701421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 22701421 is about 4764.6008227343. The cubic root of 22701421 is about 283.1507269349.

The spelling of 22701421 in words is "twenty-two million, seven hundred one thousand, four hundred twenty-one".