100385000621 has 2 divisors, whose sum is σ = 100385000622. Its totient is φ = 100385000620.

The previous prime is 100385000549. The next prime is 100385000633. The reversal of 100385000621 is 126000583001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53691841225 + 46693159396 = 231715^2 + 216086^2 .

It is an emirp because it is prime and its reverse (126000583001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100385000621 - 2¹⁰ = 100384999597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100385000021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50192500310 + 50192500311.

It is an arithmetic number, because the mean of its divisors is an integer number (50192500311).

Almost surely, 2^100385000621 is an apocalyptic number.

It is an amenable number.

100385000621 is a deficient number, since it is larger than the sum of its proper divisors (1).

100385000621 is an equidigital number, since it uses as much as digits as its factorization.

100385000621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 100385000621 its reverse (126000583001), we get a palindrome (226385583622).

The spelling of 100385000621 in words is "one hundred billion, three hundred eighty-five million, six hundred twenty-one", and thus it is an aban number.