1322402352421 has 4 divisors (see below), whose sum is σ = 1324427471532. Its totient is φ = 1320377233312.

The previous prime is 1322402352413. The next prime is 1322402352449. The reversal of 1322402352421 is 1242532042231.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 404513808196 + 917888544225 = 636014^2 + 958065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322402352421 - 2³ = 1322402352413 is a prime.

It is a super-2 number, since 2×1322402352421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322402352721) 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, 1012558576 + ... + 1012559881.

It is an arithmetic number, because the mean of its divisors is an integer number (331106867883).

Almost surely, 2^{1322402352421} is an apocalyptic number.

It is an amenable number.

1322402352421 is a deficient number, since it is larger than the sum of its proper divisors (2025119111).

1322402352421 is an equidigital number, since it uses as much as digits as its factorization.

1322402352421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025119110.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 1322402352421 its reverse (1242532042231), we get a palindrome (2564934394652).

The spelling of 1322402352421 in words is "one trillion, three hundred twenty-two billion, four hundred two million, three hundred fifty-two thousand, four hundred twenty-one".