21222413059 has 2 divisors, whose sum is σ = 21222413060. Its totient is φ = 21222413058.

The previous prime is 21222412979. The next prime is 21222413077. The reversal of 21222413059 is 95031422212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222413059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21222413059.

It is not a weakly prime, because it can be changed into another prime (21222413959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611206529 + 10611206530.

It is an arithmetic number, because the mean of its divisors is an integer number (10611206530).

Almost surely, 2^21222413059 is an apocalyptic number.

21222413059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222413059 is an equidigital number, since it uses as much as digits as its factorization.

21222413059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

It can be divided in two parts, 21222 and 413059, that added together give a square (434281 = 659²).

The spelling of 21222413059 in words is "twenty-one billion, two hundred twenty-two million, four hundred thirteen thousand, fifty-nine".