21622252315747 has 2 divisors, whose sum is σ = 21622252315748. Its totient is φ = 21622252315746.

The previous prime is 21622252315723. The next prime is 21622252315771. The reversal of 21622252315747 is 74751325222612.

It is a balanced prime because it is at equal distance from previous prime (21622252315723) and next prime (21622252315771).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21622252315747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21622252315747.

It is not a weakly prime, because it can be changed into another prime (21622252345747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10811126157873 + 10811126157874.

It is an arithmetic number, because the mean of its divisors is an integer number (10811126157874).

Almost surely, 2^{21622252315747} is an apocalyptic number.

21622252315747 is a deficient number, since it is larger than the sum of its proper divisors (1).

21622252315747 is an equidigital number, since it uses as much as digits as its factorization.

21622252315747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2822400, while the sum is 49.

The spelling of 21622252315747 in words is "twenty-one trillion, six hundred twenty-two billion, two hundred fifty-two million, three hundred fifteen thousand, seven hundred forty-seven".