21622252315771 has 2 divisors, whose sum is σ = 21622252315772. Its totient is φ = 21622252315770.

The previous prime is 21622252315747. The next prime is 21622252315813. The reversal of 21622252315771 is 17751325222612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21622252315771 - 2⁴¹ = 19423229060219 is a prime.

It is not a weakly prime, because it can be changed into another prime (21622252355771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10811126157885 + 10811126157886.

It is an arithmetic number, because the mean of its divisors is an integer number (10811126157886).

Almost surely, 2^{21622252315771} is an apocalyptic number.

21622252315771 is a deficient number, since it is larger than the sum of its proper divisors (1).

21622252315771 is an equidigital number, since it uses as much as digits as its factorization.

21622252315771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 46.

The spelling of 21622252315771 in words is "twenty-one trillion, six hundred twenty-two billion, two hundred fifty-two million, three hundred fifteen thousand, seven hundred seventy-one".