21124232299 has 2 divisors, whose sum is σ = 21124232300. Its totient is φ = 21124232298.

The previous prime is 21124232231. The next prime is 21124232341. The reversal of 21124232299 is 99223242112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21124232299 - 2¹⁵ = 21124199531 is a prime.

It is a super-2 number, since 2×21124232299² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21124232209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562116149 + 10562116150.

It is an arithmetic number, because the mean of its divisors is an integer number (10562116150).

Almost surely, 2^21124232299 is an apocalyptic number.

21124232299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21124232299 is an equidigital number, since it uses as much as digits as its factorization.

21124232299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The spelling of 21124232299 in words is "twenty-one billion, one hundred twenty-four million, two hundred thirty-two thousand, two hundred ninety-nine".