24122921 has 2 divisors, whose sum is σ = 24122922. Its totient is φ = 24122920.

The previous prime is 24122873. The next prime is 24122933. The reversal of 24122921 is 12922142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 6817321 = 4160^2 + 2611^2 .

It is a cyclic number.

It is not a de Polignac number, because 24122921 - 2²² = 19928617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (24122221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12061460 + 12061461.

It is an arithmetic number, because the mean of its divisors is an integer number (12061461).

Almost surely, 2^24122921 is an apocalyptic number.

It is an amenable number.

24122921 is a deficient number, since it is larger than the sum of its proper divisors (1).

24122921 is an equidigital number, since it uses as much as digits as its factorization.

24122921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 24122921 is about 4911.5090349097. The cubic root of 24122921 is about 288.9415278231.

The spelling of 24122921 in words is "twenty-four million, one hundred twenty-two thousand, nine hundred twenty-one".