331121213210999 has 4 divisors (see below), whose sum is σ = 331121322025320. Its totient is φ = 331121104396680.

The previous prime is 331121213210933. The next prime is 331121213211023. The reversal of 331121213210999 is 999012312121133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331121213210999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331121213210929) 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 in 3 ways as a sum of consecutive naturals, for example, 49707344 + ... + 55973765.

It is an arithmetic number, because the mean of its divisors is an integer number (82780330506330).

Almost surely, 2^{331121213210999} is an apocalyptic number.

331121213210999 is a deficient number, since it is larger than the sum of its proper divisors (108814321).

331121213210999 is a wasteful number, since it uses less digits than its factorization.

331121213210999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108814320.

The product of its (nonzero) digits is 157464, while the sum is 47.

The spelling of 331121213210999 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, two hundred thirteen million, two hundred ten thousand, nine hundred ninety-nine".