20210622361 has 2 divisors, whose sum is σ = 20210622362. Its totient is φ = 20210622360.

The previous prime is 20210622359. The next prime is 20210622371. The reversal of 20210622361 is 16322601202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19813377600 + 397244761 = 140760^2 + 19931^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210622361 - 2¹ = 20210622359 is a prime.

Together with 20210622359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20210622371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105311180 + 10105311181.

It is an arithmetic number, because the mean of its divisors is an integer number (10105311181).

Almost surely, 2^20210622361 is an apocalyptic number.

It is an amenable number.

20210622361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210622361 is an equidigital number, since it uses as much as digits as its factorization.

20210622361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 20210622361 in words is "twenty billion, two hundred ten million, six hundred twenty-two thousand, three hundred sixty-one".