12240332021 has 8 divisors (see below), whose sum is σ = 12267293184. Its totient is φ = 12213402160.

The previous prime is 12240331979. The next prime is 12240332023. The reversal of 12240332021 is 12023304221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12240332021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12240331984 and 12240332002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240332023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882875 + ... + 896631.

It is an arithmetic number, because the mean of its divisors is an integer number (1533411648).

Almost surely, 2^12240332021 is an apocalyptic number.

It is an amenable number.

12240332021 is a deficient number, since it is larger than the sum of its proper divisors (26961163).

12240332021 is a wasteful number, since it uses less digits than its factorization.

12240332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15651.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12240332021 its reverse (12023304221), we get a palindrome (24263636242).

The spelling of 12240332021 in words is "twelve billion, two hundred forty million, three hundred thirty-two thousand, twenty-one".