221322323134 has 16 divisors (see below), whose sum is σ = 374652209520. Its totient is φ = 97132053760.

The previous prime is 221322323129. The next prime is 221322323147. The reversal of 221322323134 is 431323223122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173449459 + ... + 173450734.

It is an arithmetic number, because the mean of its divisors is an integer number (23415763095).

Almost surely, 2^221322323134 is an apocalyptic number.

221322323134 is a deficient number, since it is larger than the sum of its proper divisors (153329886386).

221322323134 is a wasteful number, since it uses less digits than its factorization.

221322323134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346900235.

The product of its digits is 10368, while the sum is 28.

Adding to 221322323134 its reverse (431323223122), we get a palindrome (652645546256).

The spelling of 221322323134 in words is "two hundred twenty-one billion, three hundred twenty-two million, three hundred twenty-three thousand, one hundred thirty-four".