12010212021 has 16 divisors (see below), whose sum is σ = 16109097408. Its totient is φ = 7959177600.

The previous prime is 12010211957. The next prime is 12010212023. The reversal of 12010212021 is 12021201021.

It is not a de Polignac number, because 12010212021 - 2⁶ = 12010211957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12010211988 and 12010212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010212023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436801 + ... + 463481.

It is an arithmetic number, because the mean of its divisors is an integer number (1006818588).

Almost surely, 2^12010212021 is an apocalyptic number.

It is an amenable number.

12010212021 is a deficient number, since it is larger than the sum of its proper divisors (4098885387).

12010212021 is a wasteful number, since it uses less digits than its factorization.

12010212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27572.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12010212021 its reverse (12021201021), we get a palindrome (24031413042).

The spelling of 12010212021 in words is "twelve billion, ten million, two hundred twelve thousand, twenty-one".