21244114399 has 2 divisors, whose sum is σ = 21244114400. Its totient is φ = 21244114398.

The previous prime is 21244114373. The next prime is 21244114417. The reversal of 21244114399 is 99341144212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21244114399 - 2⁷ = 21244114271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21244114319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10622057199 + 10622057200.

It is an arithmetic number, because the mean of its divisors is an integer number (10622057200).

Almost surely, 2^21244114399 is an apocalyptic number.

21244114399 is a deficient number, since it is larger than the sum of its proper divisors (1).

21244114399 is an equidigital number, since it uses as much as digits as its factorization.

21244114399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The spelling of 21244114399 in words is "twenty-one billion, two hundred forty-four million, one hundred fourteen thousand, three hundred ninety-nine".