10210621 has 2 divisors, whose sum is σ = 10210622. Its totient is φ = 10210620.

The previous prime is 10210601. The next prime is 10210637. The reversal of 10210621 is 12601201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10150596 + 60025 = 3186^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 10210621 - 2⁵ = 10210589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10210601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105310 + 5105311.

It is an arithmetic number, because the mean of its divisors is an integer number (5105311).

Almost surely, 2^10210621 is an apocalyptic number.

It is an amenable number.

10210621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10210621 is an equidigital number, since it uses as much as digits as its factorization.

10210621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 10210621 is about 3195.4062339552. The cubic root of 10210621 is about 216.9455362477.

Adding to 10210621 its reverse (12601201), we get a palindrome (22811822).

The spelling of 10210621 in words is "ten million, two hundred ten thousand, six hundred twenty-one".