1331410214221 has 4 divisors (see below), whose sum is σ = 1331412741792. Its totient is φ = 1331407686652.

The previous prime is 1331410214171. The next prime is 1331410214243. The reversal of 1331410214221 is 1224120141331.

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 1331410214221 - 2²⁷ = 1331275996493 is a prime.

It is a super-2 number, since 2×1331410214221² (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 (1331410244221) 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, 141361 + ... + 1637926.

It is an arithmetic number, because the mean of its divisors is an integer number (332853185448).

Almost surely, 2^{1331410214221} is an apocalyptic number.

It is an amenable number.

1331410214221 is a deficient number, since it is larger than the sum of its proper divisors (2527571).

1331410214221 is an equidigital number, since it uses as much as digits as its factorization.

1331410214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527570.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1331410214221 its reverse (1224120141331), we get a palindrome (2555530355552).

The spelling of 1331410214221 in words is "one trillion, three hundred thirty-one billion, four hundred ten million, two hundred fourteen thousand, two hundred twenty-one".