91212133303 has 2 divisors, whose sum is σ = 91212133304. Its totient is φ = 91212133302.

The previous prime is 91212133297. The next prime is 91212133307. The reversal of 91212133303 is 30333121219.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91212133303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91212133307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45606066651 + 45606066652.

It is an arithmetic number, because the mean of its divisors is an integer number (45606066652).

Almost surely, 2^91212133303 is an apocalyptic number.

91212133303 is a deficient number, since it is larger than the sum of its proper divisors (1).

91212133303 is an equidigital number, since it uses as much as digits as its factorization.

91212133303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 91212133303 in words is "ninety-one billion, two hundred twelve million, one hundred thirty-three thousand, three hundred three".