213122220323 has 16 divisors (see below), whose sum is σ = 223554908160. Its totient is φ = 202923856800.

The previous prime is 213122220317. The next prime is 213122220359. The reversal of 213122220323 is 323022221312.

It is a cyclic number.

It is not a de Polignac number, because 213122220323 - 2⁴ = 213122220307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213122220923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 972473 + ... + 1171301.

It is an arithmetic number, because the mean of its divisors is an integer number (13972181760).

Almost surely, 2^213122220323 is an apocalyptic number.

213122220323 is a deficient number, since it is larger than the sum of its proper divisors (10432687837).

213122220323 is a wasteful number, since it uses less digits than its factorization.

213122220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199418.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 213122220323 its reverse (323022221312), we get a palindrome (536144441635).

The spelling of 213122220323 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred twenty thousand, three hundred twenty-three".