100994921 has 2 divisors, whose sum is σ = 100994922. Its totient is φ = 100994920.

The previous prime is 100994911. The next prime is 100994951. The reversal of 100994921 is 129499001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70744921 + 30250000 = 8411^2 + 5500^2 .

It is a cyclic number.

It is not a de Polignac number, because 100994921 - 2⁶ = 100994857 is a prime.

It is not a weakly prime, because it can be changed into another prime (100994911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50497460 + 50497461.

It is an arithmetic number, because the mean of its divisors is an integer number (50497461).

Almost surely, 2^100994921 is an apocalyptic number.

It is an amenable number.

100994921 is a deficient number, since it is larger than the sum of its proper divisors (1).

100994921 is an equidigital number, since it uses as much as digits as its factorization.

100994921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 100994921 is about 10049.6229282496. The cubic root of 100994921 is about 465.6931443950.

The spelling of 100994921 in words is "one hundred million, nine hundred ninety-four thousand, nine hundred twenty-one".