22453330421 has 2 divisors, whose sum is σ = 22453330422. Its totient is φ = 22453330420.

The previous prime is 22453330409. The next prime is 22453330429. The reversal of 22453330421 is 12403335422.

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., 14620195396 + 7833135025 = 120914^2 + 88505^2 .

It is a cyclic number.

It is not a de Polignac number, because 22453330421 - 2¹⁰ = 22453329397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22453330429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11226665210 + 11226665211.

It is an arithmetic number, because the mean of its divisors is an integer number (11226665211).

Almost surely, 2^22453330421 is an apocalyptic number.

It is an amenable number.

22453330421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22453330421 is an equidigital number, since it uses as much as digits as its factorization.

22453330421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 22453330421 its reverse (12403335422), we get a palindrome (34856665843).

The spelling of 22453330421 in words is "twenty-two billion, four hundred fifty-three million, three hundred thirty thousand, four hundred twenty-one".