1211212311132 has 12 divisors (see below), whose sum is σ = 2826162059336. Its totient is φ = 403737437040.

The previous prime is 1211212311131. The next prime is 1211212311151. The reversal of 1211212311132 is 2311132121121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1211212311132² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1211212311099 and 1211212311108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211212311131) 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, 50467179619 + ... + 50467179642.

Almost surely, 2^{1211212311132} is an apocalyptic number.

1211212311132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211212311132 is an abundant number, since it is smaller than the sum of its proper divisors (1614949748204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211212311132 is a wasteful number, since it uses less digits than its factorization.

1211212311132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100934359268 (or 100934359266 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

Adding to 1211212311132 its reverse (2311132121121), we get a palindrome (3522344432253).

The spelling of 1211212311132 in words is "one trillion, two hundred eleven billion, two hundred twelve million, three hundred eleven thousand, one hundred thirty-two".