21232224049 has 2 divisors, whose sum is σ = 21232224050. Its totient is φ = 21232224048.

The previous prime is 21232224037. The next prime is 21232224179. The reversal of 21232224049 is 94042223212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20152641600 + 1079582449 = 141960^2 + 32857^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232224049 - 2¹⁹ = 21231699761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21232224049.

It is not a weakly prime, because it can be changed into another prime (21232224649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616112024 + 10616112025.

It is an arithmetic number, because the mean of its divisors is an integer number (10616112025).

Almost surely, 2^21232224049 is an apocalyptic number.

It is an amenable number.

21232224049 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232224049 is an equidigital number, since it uses as much as digits as its factorization.

21232224049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 21232224049 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty-four thousand, forty-nine".