1322331121021 has 4 divisors (see below), whose sum is σ = 1344008680444. Its totient is φ = 1300653561600.

The previous prime is 1322331121009. The next prime is 1322331121031. The reversal of 1322331121021 is 1201211332231.

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 284530495396 + 1037800625625 = 533414^2 + 1018725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322331121021 - 2⁷ = 1322331120893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322331120983 and 1322331121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322331121031) 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, 10838779620 + ... + 10838779741.

It is an arithmetic number, because the mean of its divisors is an integer number (336002170111).

Almost surely, 2^{1322331121021} is an apocalyptic number.

It is an amenable number.

1322331121021 is a deficient number, since it is larger than the sum of its proper divisors (21677559423).

1322331121021 is an equidigital number, since it uses as much as digits as its factorization.

1322331121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21677559422.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1322331121021 its reverse (1201211332231), we get a palindrome (2523542453252).

The spelling of 1322331121021 in words is "one trillion, three hundred twenty-two billion, three hundred thirty-one million, one hundred twenty-one thousand, twenty-one".