33013212191 has 2 divisors, whose sum is σ = 33013212192. Its totient is φ = 33013212190.

The previous prime is 33013212179. The next prime is 33013212227. The reversal of 33013212191 is 19121231033.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33013212191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33013212191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33013212091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16506606095 + 16506606096.

It is an arithmetic number, because the mean of its divisors is an integer number (16506606096).

Almost surely, 2^33013212191 is an apocalyptic number.

33013212191 is a deficient number, since it is larger than the sum of its proper divisors (1).

33013212191 is an equidigital number, since it uses as much as digits as its factorization.

33013212191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 33013212191 in words is "thirty-three billion, thirteen million, two hundred twelve thousand, one hundred ninety-one".