12000022021 has 8 divisors (see below), whose sum is σ = 13002385760. Its totient is φ = 11008984752.

The previous prime is 12000021961. The next prime is 12000022031. The reversal of 12000022021 is 12022000021.

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 12000022021 - 2²⁵ = 11966467589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000021989 and 12000022007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000022031) 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, 2829411 + ... + 2833648.

It is an arithmetic number, because the mean of its divisors is an integer number (1625298220).

Almost surely, 2^12000022021 is an apocalyptic number.

It is an amenable number.

12000022021 is a deficient number, since it is larger than the sum of its proper divisors (1002363739).

12000022021 is a wasteful number, since it uses less digits than its factorization.

12000022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663235.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12000022021 its reverse (12022000021), we get a palindrome (24022022042).

The spelling of 12000022021 in words is "twelve billion, twenty-two thousand, twenty-one".