213121213322999 has 8 divisors (see below), whose sum is σ = 220012809891840. Its totient is φ = 206230661674200.

The previous prime is 213121213322987. The next prime is 213121213323013. The reversal of 213121213322999 is 999223312121312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213121213322999 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 (213121213322299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260815487 + ... + 261631344.

It is an arithmetic number, because the mean of its divisors is an integer number (27501601236480).

Almost surely, 2^{213121213322999} is an apocalyptic number.

213121213322999 is a deficient number, since it is larger than the sum of its proper divisors (6891596568841).

213121213322999 is a wasteful number, since it uses less digits than its factorization.

213121213322999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522460021.

The product of its digits is 629856, while the sum is 50.

The spelling of 213121213322999 in words is "two hundred thirteen trillion, one hundred twenty-one billion, two hundred thirteen million, three hundred twenty-two thousand, nine hundred ninety-nine".