1212311132 has 12 divisors (see below), whose sum is σ = 2153209800. Its totient is φ = 597108336.

The previous prime is 1212311119. The next prime is 1212311137. The reversal of 1212311132 is 2311132121.

It is a super-2 number, since 2×1212311132² = 2939396561542242848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212311132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212311137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2261507 + ... + 2262042.

It is an arithmetic number, because the mean of its divisors is an integer number (179434150).

Almost surely, 2^1212311132 is an apocalyptic number.

It is an amenable number.

1212311132 is a deficient number, since it is larger than the sum of its proper divisors (940898668).

1212311132 is a wasteful number, since it uses less digits than its factorization.

1212311132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523620 (or 4523618 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 1212311132 is about 34818.2586009123. The cubic root of 1212311132 is about 1066.2802480943.

Adding to 1212311132 its reverse (2311132121), we get a palindrome (3523443253).

It can be divided in two parts, 121 and 2311132, that multiplied together give a palindrome (279646972).

The spelling of 1212311132 in words is "one billion, two hundred twelve million, three hundred eleven thousand, one hundred thirty-two".