1211261332 has 6 divisors (see below), whose sum is σ = 2119707338. Its totient is φ = 605630664.

The previous prime is 1211261279. The next prime is 1211261347. The reversal of 1211261332 is 2331621121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 931836676 + 279424656 = 30526^2 + 16716^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151407663 + ... + 151407670.

Almost surely, 2^1211261332 is an apocalyptic number.

It is an amenable number.

1211261332 is a deficient number, since it is larger than the sum of its proper divisors (908446006).

1211261332 is a wasteful number, since it uses less digits than its factorization.

1211261332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302815337 (or 302815335 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 1211261332 is about 34803.1799121862. The cubic root of 1211261332 is about 1065.9723776586.

Adding to 1211261332 its reverse (2331621121), we get a palindrome (3542882453).

The spelling of 1211261332 in words is "one billion, two hundred eleven million, two hundred sixty-one thousand, three hundred thirty-two".