622916969221 has 2 divisors, whose sum is σ = 622916969222. Its totient is φ = 622916969220.

The previous prime is 622916969219. The next prime is 622916969243. The reversal of 622916969221 is 122969619226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 606862812196 + 16054157025 = 779014^2 + 126705^2 .

It is a cyclic number.

It is not a de Polignac number, because 622916969221 - 2¹ = 622916969219 is a prime.

It is a super-2 number, since 2×622916969221² (a number of 24 digits) contains 22 as substring.

Together with 622916969219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622910969221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311458484610 + 311458484611.

It is an arithmetic number, because the mean of its divisors is an integer number (311458484611).

Almost surely, 2^622916969221 is an apocalyptic number.

It is an amenable number.

622916969221 is a deficient number, since it is larger than the sum of its proper divisors (1).

622916969221 is an equidigital number, since it uses as much as digits as its factorization.

622916969221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 55.

The spelling of 622916969221 in words is "six hundred twenty-two billion, nine hundred sixteen million, nine hundred sixty-nine thousand, two hundred twenty-one".