1332312131221 has 4 divisors (see below), whose sum is σ = 1332319154272. Its totient is φ = 1332305108172.

The previous prime is 1332312131201. The next prime is 1332312131231. The reversal of 1332312131221 is 1221312132331.

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 1332312131221 - 2¹³ = 1332312123029 is a prime.

It is a super-3 number, since 3×1332312131221³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1332312131201) 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, 3218835 + ... + 3609088.

It is an arithmetic number, because the mean of its divisors is an integer number (333079788568).

Almost surely, 2^{1332312131221} is an apocalyptic number.

It is an amenable number.

1332312131221 is a deficient number, since it is larger than the sum of its proper divisors (7023051).

1332312131221 is an equidigital number, since it uses as much as digits as its factorization.

1332312131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7023050.

The product of its digits is 1296, while the sum is 25.

Adding to 1332312131221 its reverse (1221312132331), we get a palindrome (2553624263552).

The spelling of 1332312131221 in words is "one trillion, three hundred thirty-two billion, three hundred twelve million, one hundred thirty-one thousand, two hundred twenty-one".