91212103332353 has 2 divisors, whose sum is σ = 91212103332354. Its totient is φ = 91212103332352.

The previous prime is 91212103332349. The next prime is 91212103332407. The reversal of 91212103332353 is 35323330121219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83383707835024 + 7828395497329 = 9131468^2 + 2797927^2 .

It is a cyclic number.

It is not a de Polignac number, because 91212103332353 - 2² = 91212103332349 is a prime.

It is not a weakly prime, because it can be changed into another prime (91214103332353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45606051666176 + 45606051666177.

It is an arithmetic number, because the mean of its divisors is an integer number (45606051666177).

Almost surely, 2^{91212103332353} is an apocalyptic number.

It is an amenable number.

91212103332353 is a deficient number, since it is larger than the sum of its proper divisors (1).

91212103332353 is an equidigital number, since it uses as much as digits as its factorization.

91212103332353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 38.

The spelling of 91212103332353 in words is "ninety-one trillion, two hundred twelve billion, one hundred three million, three hundred thirty-two thousand, three hundred fifty-three".