11231212132 has 24 divisors (see below), whose sum is σ = 23644658240. Its totient is φ = 4560040800.

The previous prime is 11231212127. The next prime is 11231212159. The reversal of 11231212132 is 23121213211.

It is a super-2 number, since 2×11231212132² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 10555119 + ... + 10556182.

Almost surely, 2^11231212132 is an apocalyptic number.

It is an amenable number.

11231212132 is an abundant number, since it is smaller than the sum of its proper divisors (12413446108).

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

11231212132 is a wasteful number, since it uses less digits than its factorization.

11231212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21111331 (or 21111329 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 11231212132 its reverse (23121213211), we get a palindrome (34352425343).

It can be divided in two parts, 11 and 231212132, that multiplied together give a palindrome (2543333452).

The spelling of 11231212132 in words is "eleven billion, two hundred thirty-one million, two hundred twelve thousand, one hundred thirty-two".