100481021 has 2 divisors, whose sum is σ = 100481022. Its totient is φ = 100481020.

The previous prime is 100481009. The next prime is 100481023. The reversal of 100481021 is 120184001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96924025 + 3556996 = 9845^2 + 1886^2 .

It is a cyclic number.

It is not a de Polignac number, because 100481021 - 2⁶ = 100480957 is a prime.

Together with 100481023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100481023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50240510 + 50240511.

It is an arithmetic number, because the mean of its divisors is an integer number (50240511).

Almost surely, 2^100481021 is an apocalyptic number.

It is an amenable number.

100481021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100481021 is an equidigital number, since it uses as much as digits as its factorization.

100481021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 100481021 is about 10024.0221967033. The cubic root of 100481021 is about 464.9019271337.

The spelling of 100481021 in words is "one hundred million, four hundred eighty-one thousand, twenty-one".