12021210231 has 8 divisors (see below), whose sum is σ = 16062900480. Its totient is φ = 7996830072.

The previous prime is 12021210203. The next prime is 12021210251. The reversal of 12021210231 is 13201212021.

12021210231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12021210231 - 2⁶ = 12021210167 is a prime.

It is a super-2 number, since 2×12021210231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12021210231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021210251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4325901 + ... + 4328678.

It is an arithmetic number, because the mean of its divisors is an integer number (2007862560).

Almost surely, 2^12021210231 is an apocalyptic number.

12021210231 is a deficient number, since it is larger than the sum of its proper divisors (4041690249).

12021210231 is an equidigital number, since it uses as much as digits as its factorization.

12021210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655045.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12021210231 its reverse (13201212021), we get a palindrome (25222422252).

The spelling of 12021210231 in words is "twelve billion, twenty-one million, two hundred ten thousand, two hundred thirty-one".