11821023132 has 12 divisors (see below), whose sum is σ = 27582387336. Its totient is φ = 3940341040.

The previous prime is 11821023131. The next prime is 11821023139. The reversal of 11821023132 is 23132012811.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11821023131) 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, 492542619 + ... + 492542642.

It is an arithmetic number, because the mean of its divisors is an integer number (2298532278).

Almost surely, 2^11821023132 is an apocalyptic number.

11821023132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11821023132 is an abundant number, since it is smaller than the sum of its proper divisors (15761364204).

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

11821023132 is a wasteful number, since it uses less digits than its factorization.

11821023132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985085268 (or 985085266 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 11821023132 its reverse (23132012811), we get a palindrome (34953035943).

The spelling of 11821023132 in words is "eleven billion, eight hundred twenty-one million, twenty-three thousand, one hundred thirty-two".