12121311332 has 24 divisors (see below), whose sum is σ = 22848688632. Its totient is φ = 5593305600.

The previous prime is 12121311289. The next prime is 12121311341. The reversal of 12121311332 is 23311312121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1915462756 + 10205848576 = 43766^2 + 101024^2 .

It is a super-2 number, since 2×12121311332² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265982 + ... + 308202.

It is an arithmetic number, because the mean of its divisors is an integer number (952028693).

Almost surely, 2^12121311332 is an apocalyptic number.

It is an amenable number.

12121311332 is a deficient number, since it is larger than the sum of its proper divisors (10727377300).

12121311332 is a wasteful number, since it uses less digits than its factorization.

12121311332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47759 (or 47757 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 12121311332 its reverse (23311312121), we get a palindrome (35432623453).

The spelling of 12121311332 in words is "twelve billion, one hundred twenty-one million, three hundred eleven thousand, three hundred thirty-two".