221210032323 has 16 divisors (see below), whose sum is σ = 337146609920. Its totient is φ = 126381486816.

The previous prime is 221210032271. The next prime is 221210032327. The reversal of 221210032323 is 323230012122.

It is a happy number.

It is not a de Polignac number, because 221210032323 - 2⁹ = 221210031811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221210032323.

It is not an unprimeable number, because it can be changed into a prime (221210032327) 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, 897868 + ... + 1117401.

It is an arithmetic number, because the mean of its divisors is an integer number (21071663120).

Almost surely, 2^221210032323 is an apocalyptic number.

221210032323 is a deficient number, since it is larger than the sum of its proper divisors (115936577597).

221210032323 is a wasteful number, since it uses less digits than its factorization.

221210032323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020506.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221210032323 its reverse (323230012122), we get a palindrome (544440044445).

The spelling of 221210032323 in words is "two hundred twenty-one billion, two hundred ten million, thirty-two thousand, three hundred twenty-three".