221313330122 has 4 divisors (see below), whose sum is σ = 331969995186. Its totient is φ = 110656665060.

The previous prime is 221313330097. The next prime is 221313330127. The reversal of 221313330122 is 221033313122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221033313122 = 2 ⋅110516656561.

It can be written as a sum of positive squares in only one way, i.e., 147372299881 + 73941030241 = 383891^2 + 271921^2 .

It is not an unprimeable number, because it can be changed into a prime (221313330127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55328332529 + ... + 55328332532.

Almost surely, 2^221313330122 is an apocalyptic number.

221313330122 is a deficient number, since it is larger than the sum of its proper divisors (110656665064).

221313330122 is a wasteful number, since it uses less digits than its factorization.

221313330122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110656665063.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 221313330122 its reverse (221033313122), we get a palindrome (442346643244).

The spelling of 221313330122 in words is "two hundred twenty-one billion, three hundred thirteen million, three hundred thirty thousand, one hundred twenty-two".