910900910921 has 2 divisors, whose sum is σ = 910900910922. Its totient is φ = 910900910920.

The previous prime is 910900910893. The next prime is 910900910951. The reversal of 910900910921 is 129019009019.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 805795270921 + 105105640000 = 897661^2 + 324200^2 .

It is a cyclic number.

It is not a de Polignac number, because 910900910921 - 2³⁴ = 893721041737 is a prime.

It is not a weakly prime, because it can be changed into another prime (910900910951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455450455460 + 455450455461.

It is an arithmetic number, because the mean of its divisors is an integer number (455450455461).

Almost surely, 2^910900910921 is an apocalyptic number.

It is an amenable number.

910900910921 is a deficient number, since it is larger than the sum of its proper divisors (1).

910900910921 is an equidigital number, since it uses as much as digits as its factorization.

910900910921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 41.

The spelling of 910900910921 in words is "nine hundred ten billion, nine hundred million, nine hundred ten thousand, nine hundred twenty-one".