1322221312231 has 4 divisors (see below), whose sum is σ = 1322680579200. Its totient is φ = 1321762045264.

The previous prime is 1322221312213. The next prime is 1322221312241. The reversal of 1322221312231 is 1322131222231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322221312231 is a prime.

It is a super-2 number, since 2×1322221312231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322221312196 and 1322221312205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322221312211) 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, 229629166 + ... + 229634923.

It is an arithmetic number, because the mean of its divisors is an integer number (330670144800).

Almost surely, 2^{1322221312231} is an apocalyptic number.

1322221312231 is a deficient number, since it is larger than the sum of its proper divisors (459266969).

1322221312231 is an equidigital number, since it uses as much as digits as its factorization.

1322221312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459266968.

The product of its digits is 1728, while the sum is 25.

Adding to 1322221312231 its reverse (1322131222231), we get a palindrome (2644352534462).

The spelling of 1322221312231 in words is "one trillion, three hundred twenty-two billion, two hundred twenty-one million, three hundred twelve thousand, two hundred thirty-one".