12010202421 has 32 divisors (see below), whose sum is σ = 18624872448. Its totient is φ = 6742673280.

The previous prime is 12010202383. The next prime is 12010202453. The reversal of 12010202421 is 12420201021.

It is not a de Polignac number, because 12010202421 - 2⁹ = 12010201909 is a prime.

It is a super-2 number, since 2×12010202421² (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 12010202421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010202521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252841 + ... + 296561.

It is an arithmetic number, because the mean of its divisors is an integer number (582027264).

Almost surely, 2^12010202421 is an apocalyptic number.

It is an amenable number.

12010202421 is a deficient number, since it is larger than the sum of its proper divisors (6614670027).

12010202421 is a wasteful number, since it uses less digits than its factorization.

12010202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43961.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12010202421 its reverse (12420201021), we get a palindrome (24430403442).

The spelling of 12010202421 in words is "twelve billion, ten million, two hundred two thousand, four hundred twenty-one".