12000212021 has 8 divisors (see below), whose sum is σ = 13717644864. Its totient is φ = 10283558400.

The previous prime is 12000212017. The next prime is 12000212047. The reversal of 12000212021 is 12021200021.

It is a happy number.

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 12000212021 - 2² = 12000212017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12000211993 and 12000212011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000214021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161420 + ... + 223733.

It is an arithmetic number, because the mean of its divisors is an integer number (1714705608).

Almost surely, 2^12000212021 is an apocalyptic number.

It is an amenable number.

12000212021 is a deficient number, since it is larger than the sum of its proper divisors (1717432843).

12000212021 is an equidigital number, since it uses as much as digits as its factorization.

12000212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389611.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12000212021 its reverse (12021200021), we get a palindrome (24021412042).

The spelling of 12000212021 in words is "twelve billion, two hundred twelve thousand, twenty-one".