1332212261 has 2 divisors, whose sum is σ = 1332212262. Its totient is φ = 1332212260.

The previous prime is 1332212251. The next prime is 1332212311. The reversal of 1332212261 is 1622122331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1303643236 + 28569025 = 36106^2 + 5345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1332212261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1332212251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666106130 + 666106131.

It is an arithmetic number, because the mean of its divisors is an integer number (666106131).

Almost surely, 2^1332212261 is an apocalyptic number.

It is an amenable number.

1332212261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1332212261 is an equidigital number, since it uses as much as digits as its factorization.

1332212261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 1332212261 is about 36499.4830237361. The cubic root of 1332212261 is about 1100.3338548617. Note that the first 3 decimals are identical.

Adding to 1332212261 its reverse (1622122331), we get a palindrome (2954334592).

The spelling of 1332212261 in words is "one billion, three hundred thirty-two million, two hundred twelve thousand, two hundred sixty-one".