21622475299 has 2 divisors, whose sum is σ = 21622475300. Its totient is φ = 21622475298.

The previous prime is 21622475291. The next prime is 21622475339. The reversal of 21622475299 is 99257422612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21622475299 - 2³ = 21622475291 is a prime.

It is not a weakly prime, because it can be changed into another prime (21622475291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10811237649 + 10811237650.

It is an arithmetic number, because the mean of its divisors is an integer number (10811237650).

Almost surely, 2^21622475299 is an apocalyptic number.

21622475299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21622475299 is an equidigital number, since it uses as much as digits as its factorization.

21622475299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

It can be divided in two parts, 216 and 22475299, that multiplied together give a palindrome (4854664584).

The spelling of 21622475299 in words is "twenty-one billion, six hundred twenty-two million, four hundred seventy-five thousand, two hundred ninety-nine".