24101921 has 2 divisors, whose sum is σ = 24101922. Its totient is φ = 24101920.

The previous prime is 24101879. The next prime is 24101923. The reversal of 24101921 is 12910142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13957696 + 10144225 = 3736^2 + 3185^2 .

It is a cyclic number.

It is not a de Polignac number, because 24101921 - 2¹⁰ = 24100897 is a prime.

Together with 24101923, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 24101893 and 24101902.

It is not a weakly prime, because it can be changed into another prime (24101923) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12050960 + 12050961.

It is an arithmetic number, because the mean of its divisors is an integer number (12050961).

Almost surely, 2^24101921 is an apocalyptic number.

It is an amenable number.

24101921 is a deficient number, since it is larger than the sum of its proper divisors (1).

24101921 is an equidigital number, since it uses as much as digits as its factorization.

24101921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 24101921 is about 4909.3707336073. The cubic root of 24101921 is about 288.8576582993.

The spelling of 24101921 in words is "twenty-four million, one hundred one thousand, nine hundred twenty-one".