622010021 has 2 divisors, whose sum is σ = 622010022. Its totient is φ = 622010020.

The previous prime is 622009963. The next prime is 622010041. The reversal of 622010021 is 120010226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491730625 + 130279396 = 22175^2 + 11414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622010021 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 622009978 and 622010005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622010041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311005010 + 311005011.

It is an arithmetic number, because the mean of its divisors is an integer number (311005011).

Almost surely, 2^622010021 is an apocalyptic number.

It is an amenable number.

622010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

622010021 is an equidigital number, since it uses as much as digits as its factorization.

622010021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 622010021 is about 24940.1287286173. The cubic root of 622010021 is about 853.6223821246.

Adding to 622010021 its reverse (120010226), we get a palindrome (742020247).

The spelling of 622010021 in words is "six hundred twenty-two million, ten thousand, twenty-one".