12010010021 has 8 divisors (see below), whose sum is σ = 12052170144. Its totient is φ = 11967924880.

The previous prime is 12010009967. The next prime is 12010010081. The reversal of 12010010021 is 12001001021.

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 12010010021 - 2¹⁸ = 12009747877 is a prime.

It is a super-3 number, since 3×12010010021³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010009990 and 12010010008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010010081) 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 7 ways as a sum of consecutive naturals, for example, 312311 + ... + 348651.

It is an arithmetic number, because the mean of its divisors is an integer number (1506521268).

Almost surely, 2^12010010021 is an apocalyptic number.

It is an amenable number.

12010010021 is a deficient number, since it is larger than the sum of its proper divisors (42160123).

12010010021 is an equidigital number, since it uses as much as digits as its factorization.

12010010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37491.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12010010021 its reverse (12001001021), we get a palindrome (24011011042).

The spelling of 12010010021 in words is "twelve billion, ten million, ten thousand, twenty-one".