221122323212313 has 4 divisors (see below), whose sum is σ = 294829764283088. Its totient is φ = 147414882141540.

The previous prime is 221122323212267. The next prime is 221122323212339. The reversal of 221122323212313 is 313212323221122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 221122323212313 - 2²¹ = 221122321115161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122323212113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36853720535383 + ... + 36853720535388.

It is an arithmetic number, because the mean of its divisors is an integer number (73707441070772).

Almost surely, 2^{221122323212313} is an apocalyptic number.

It is an amenable number.

221122323212313 is a deficient number, since it is larger than the sum of its proper divisors (73707441070775).

221122323212313 is an equidigital number, since it uses as much as digits as its factorization.

221122323212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73707441070774.

The product of its digits is 10368, while the sum is 30.

Adding to 221122323212313 its reverse (313212323221122), we get a palindrome (534334646433435).

The spelling of 221122323212313 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, three hundred twenty-three million, two hundred twelve thousand, three hundred thirteen".