12000021122021 has 8 divisors (see below), whose sum is σ = 12705944639040. Its totient is φ = 11294102040768.

The previous prime is 12000021122003. The next prime is 12000021122039. The reversal of 12000021122021 is 12022112000021.

It is an interprime number because it is at equal distance from previous prime (12000021122003) and next prime (12000021122039).

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 12000021122021 - 2³⁰ = 11998947380197 is a prime.

It is a super-2 number, since 2×12000021122021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000021121987 and 12000021122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000021122521) 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, 5631350 + ... + 7464056.

It is an arithmetic number, because the mean of its divisors is an integer number (1588243079880).

Almost surely, 2^{12000021122021} is an apocalyptic number.

It is an amenable number.

12000021122021 is a deficient number, since it is larger than the sum of its proper divisors (705923517019).

12000021122021 is a wasteful number, since it uses less digits than its factorization.

12000021122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217883.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12000021122021 its reverse (12022112000021), we get a palindrome (24022133122042).

The spelling of 12000021122021 in words is "twelve trillion, twenty-one million, one hundred twenty-two thousand, twenty-one".