12010203021 has 32 divisors (see below), whose sum is σ = 16871500800. Its totient is φ = 7590844800.

The previous prime is 12010202921. The next prime is 12010203059. The reversal of 12010203021 is 12030201021.

It is not a de Polignac number, because 12010203021 - 2⁹ = 12010202509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12010202988 and 12010203006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011203021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1046806 + ... + 1058216.

It is an arithmetic number, because the mean of its divisors is an integer number (527234400).

Almost surely, 2^12010203021 is an apocalyptic number.

It is an amenable number.

12010203021 is a deficient number, since it is larger than the sum of its proper divisors (4861297779).

12010203021 is a wasteful number, since it uses less digits than its factorization.

12010203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11697.

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

Adding to 12010203021 its reverse (12030201021), we get a palindrome (24040404042).

The spelling of 12010203021 in words is "twelve billion, ten million, two hundred three thousand, twenty-one".