100001110621 has 2 divisors, whose sum is σ = 100001110622. Its totient is φ = 100001110620.

The previous prime is 100001110619. The next prime is 100001110679. The reversal of 100001110621 is 126011100001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96450619225 + 3550491396 = 310565^2 + 59586^2 .

It is an emirp because it is prime and its reverse (126011100001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100001110621 - 2¹ = 100001110619 is a prime.

Together with 100001110619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100001110681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000555310 + 50000555311.

It is an arithmetic number, because the mean of its divisors is an integer number (50000555311).

Almost surely, 2^100001110621 is an apocalyptic number.

It is an amenable number.

100001110621 is a deficient number, since it is larger than the sum of its proper divisors (1).

100001110621 is an equidigital number, since it uses as much as digits as its factorization.

100001110621 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 13.

Adding to 100001110621 its reverse (126011100001), we get a palindrome (226012210622).

The spelling of 100001110621 in words is "one hundred billion, one million, one hundred ten thousand, six hundred twenty-one".