100010621 has 2 divisors, whose sum is σ = 100010622. Its totient is φ = 100010620.

The previous prime is 100010597. The next prime is 100010627. The reversal of 100010621 is 126010001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51638596 + 48372025 = 7186^2 + 6955^2 .

It is a cyclic number.

It is not a de Polignac number, because 100010621 - 2¹⁸ = 99748477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100010627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005310 + 50005311.

It is an arithmetic number, because the mean of its divisors is an integer number (50005311).

Almost surely, 2^100010621 is an apocalyptic number.

It is an amenable number.

100010621 is a deficient number, since it is larger than the sum of its proper divisors (1).

100010621 is an equidigital number, since it uses as much as digits as its factorization.

100010621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 100010621 is about 10000.5310359000. The cubic root of 100010621 is about 464.1753155512.

Adding to 100010621 its reverse (126010001), we get a palindrome (226020622).

The spelling of 100010621 in words is "one hundred million, ten thousand, six hundred twenty-one".