1332213121 has 2 divisors, whose sum is σ = 1332213122. Its totient is φ = 1332213120.

The previous prime is 1332213119. The next prime is 1332213131. The reversal of 1332213121 is 1213122331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 787644225 + 544568896 = 28065^2 + 23336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1332213121 - 2¹ = 1332213119 is a prime.

Together with 1332213119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1332213131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666106560 + 666106561.

It is an arithmetic number, because the mean of its divisors is an integer number (666106561).

Almost surely, 2^1332213121 is an apocalyptic number.

It is an amenable number.

1332213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332213121 is an equidigital number, since it uses as much as digits as its factorization.

1332213121 is an evil number, because the sum of its binary digits is even.

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

The square root of 1332213121 is about 36499.4948047230. The cubic root of 1332213121 is about 1100.3340916325.

Adding to 1332213121 its reverse (1213122331), we get a palindrome (2545335452).

The spelling of 1332213121 in words is "one billion, three hundred thirty-two million, two hundred thirteen thousand, one hundred twenty-one".