1322918875721 has 4 divisors (see below), whose sum is σ = 1325548933632. Its totient is φ = 1320288817812.

The previous prime is 1322918875711. The next prime is 1322918875723. The reversal of 1322918875721 is 1275788192231.

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 a cyclic number.

It is not a de Polignac number, because 1322918875721 - 2¹⁴ = 1322918859337 is a prime.

It is a super-2 number, since 2×1322918875721² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322918875723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315028201 + ... + 1315029206.

It is an arithmetic number, because the mean of its divisors is an integer number (331387233408).

Almost surely, 2^{1322918875721} is an apocalyptic number.

It is an amenable number.

1322918875721 is a deficient number, since it is larger than the sum of its proper divisors (2630057911).

1322918875721 is an equidigital number, since it uses as much as digits as its factorization.

1322918875721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630057910.

The product of its digits is 3386880, while the sum is 56.

The spelling of 1322918875721 in words is "one trillion, three hundred twenty-two billion, nine hundred eighteen million, eight hundred seventy-five thousand, seven hundred twenty-one".