12011021332 has 12 divisors (see below), whose sum is σ = 21415878036. Its totient is φ = 5892199040.

The previous prime is 12011021251. The next prime is 12011021377. The reversal of 12011021332 is 23312011021.

It can be written as a sum of positive squares in 2 ways, for example, as 3175773316 + 8835248016 = 56354^2 + 93996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28327669 + ... + 28328092.

It is an arithmetic number, because the mean of its divisors is an integer number (1784656503).

Almost surely, 2^12011021332 is an apocalyptic number.

It is an amenable number.

12011021332 is a deficient number, since it is larger than the sum of its proper divisors (9404856704).

12011021332 is a wasteful number, since it uses less digits than its factorization.

12011021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56655818 (or 56655816 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12011021332 its reverse (23312011021), we get a palindrome (35323032353).

The spelling of 12011021332 in words is "twelve billion, eleven million, twenty-one thousand, three hundred thirty-two".