33121132091 has 2 divisors, whose sum is σ = 33121132092. Its totient is φ = 33121132090.

The previous prime is 33121132061. The next prime is 33121132097. The reversal of 33121132091 is 19023112133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33121132091 - 2²² = 33116937787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33121132091.

It is not a weakly prime, because it can be changed into another prime (33121132097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560566045 + 16560566046.

It is an arithmetic number, because the mean of its divisors is an integer number (16560566046).

Almost surely, 2^33121132091 is an apocalyptic number.

33121132091 is a deficient number, since it is larger than the sum of its proper divisors (1).

33121132091 is an equidigital number, since it uses as much as digits as its factorization.

33121132091 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 33121132091 in words is "thirty-three billion, one hundred twenty-one million, one hundred thirty-two thousand, ninety-one".