221023012323 has 16 divisors (see below), whose sum is σ = 295567759872. Its totient is φ = 146913972000.

The previous prime is 221023012313. The next prime is 221023012351. The reversal of 221023012323 is 323210320122.

It is a happy number.

It is not a de Polignac number, because 221023012323 - 2⁵ = 221023012291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221023012323.

It is not an unprimeable number, because it can be changed into a prime (221023012313) 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, 1723558 + ... + 1847348.

It is an arithmetic number, because the mean of its divisors is an integer number (18472984992).

Almost surely, 2^221023012323 is an apocalyptic number.

221023012323 is a deficient number, since it is larger than the sum of its proper divisors (74544747549).

221023012323 is a wasteful number, since it uses less digits than its factorization.

221023012323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125546.

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

Adding to 221023012323 its reverse (323210320122), we get a palindrome (544233332445).

The spelling of 221023012323 in words is "two hundred twenty-one billion, twenty-three million, twelve thousand, three hundred twenty-three".