1332131221 has 8 divisors (see below), whose sum is σ = 1341555488. Its totient is φ = 1322730000.

The previous prime is 1332131209. The next prime is 1332131231. The reversal of 1332131221 is 1221312331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1332131221 - 2²⁹ = 795260309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1332131231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119746 + ... + 130396.

It is an arithmetic number, because the mean of its divisors is an integer number (167694436).

Almost surely, 2^1332131221 is an apocalyptic number.

It is an amenable number.

1332131221 is a deficient number, since it is larger than the sum of its proper divisors (9424267).

1332131221 is a wasteful number, since it uses less digits than its factorization.

1332131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11523.

The product of its digits is 216, while the sum is 19.

The square root of 1332131221 is about 36498.3728541424. The cubic root of 1332131221 is about 1100.3115428857.

Adding to 1332131221 its reverse (1221312331), we get a palindrome (2553443552).

The spelling of 1332131221 in words is "one billion, three hundred thirty-two million, one hundred thirty-one thousand, two hundred twenty-one".