33131121379 has 2 divisors, whose sum is σ = 33131121380. Its totient is φ = 33131121378.

The previous prime is 33131121377. The next prime is 33131121391. The reversal of 33131121379 is 97312113133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33131121379 - 2¹ = 33131121377 is a prime.

Together with 33131121377, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33131121377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16565560689 + 16565560690.

It is an arithmetic number, because the mean of its divisors is an integer number (16565560690).

Almost surely, 2^33131121379 is an apocalyptic number.

33131121379 is a deficient number, since it is larger than the sum of its proper divisors (1).

33131121379 is an equidigital number, since it uses as much as digits as its factorization.

33131121379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 34.

The spelling of 33131121379 in words is "thirty-three billion, one hundred thirty-one million, one hundred twenty-one thousand, three hundred seventy-nine".