12020310021 has 8 divisors (see below), whose sum is σ = 16579738080. Its totient is φ = 7737210992.

The previous prime is 12020309981. The next prime is 12020310041. The reversal of 12020310021 is 12001302021.

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

It is a cyclic number.

It is not a de Polignac number, because 12020310021 - 2¹⁵ = 12020277253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020309979 and 12020310006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020310041) 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, 69082155 + ... + 69082328.

It is an arithmetic number, because the mean of its divisors is an integer number (2072467260).

Almost surely, 2^12020310021 is an apocalyptic number.

It is an amenable number.

12020310021 is a deficient number, since it is larger than the sum of its proper divisors (4559428059).

12020310021 is a wasteful number, since it uses less digits than its factorization.

12020310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138164515.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12020310021 its reverse (12001302021), we get a palindrome (24021612042).

The spelling of 12020310021 in words is "twelve billion, twenty million, three hundred ten thousand, twenty-one".