100340309221 has 2 divisors, whose sum is σ = 100340309222. Its totient is φ = 100340309220.

The previous prime is 100340309191. The next prime is 100340309269. The reversal of 100340309221 is 122903043001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60830796321 + 39509512900 = 246639^2 + 198770^2 .

It is an emirp because it is prime and its reverse (122903043001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100340309221 - 2³⁵ = 65980570853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100340309281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50170154610 + 50170154611.

It is an arithmetic number, because the mean of its divisors is an integer number (50170154611).

Almost surely, 2^100340309221 is an apocalyptic number.

It is an amenable number.

100340309221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100340309221 is an equidigital number, since it uses as much as digits as its factorization.

100340309221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 100340309221 in words is "one hundred billion, three hundred forty million, three hundred nine thousand, two hundred twenty-one".