1322331021221 has 4 divisors (see below), whose sum is σ = 1511235452832. Its totient is φ = 1133426589612.

The previous prime is 1322331021197. The next prime is 1322331021227. The reversal of 1322331021221 is 1221201332231.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322331021221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322331021227) 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, 94452215795 + ... + 94452215808.

It is an arithmetic number, because the mean of its divisors is an integer number (377808863208).

Almost surely, 2^{1322331021221} is an apocalyptic number.

It is an amenable number.

1322331021221 is a deficient number, since it is larger than the sum of its proper divisors (188904431611).

1322331021221 is an equidigital number, since it uses as much as digits as its factorization.

1322331021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188904431610.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1322331021221 its reverse (1221201332231), we get a palindrome (2543532353452).

The spelling of 1322331021221 in words is "one trillion, three hundred twenty-two billion, three hundred thirty-one million, twenty-one thousand, two hundred twenty-one".