12022022021 has 8 divisors (see below), whose sum is σ = 12154104984. Its totient is φ = 11890195200.

The previous prime is 12022022017. The next prime is 12022022081.

12022022021 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 3651784900 + 8370237121 = 60430^2 + 91489^2 .

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 12022022021 - 2² = 12022022017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022021987 and 12022022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022022081) 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, 31121 + ... + 158153.

It is an arithmetic number, because the mean of its divisors is an integer number (1519263123).

Almost surely, 2^12022022021 is an apocalyptic number.

It is an amenable number.

12022022021 is a deficient number, since it is larger than the sum of its proper divisors (132082963).

12022022021 is a wasteful number, since it uses less digits than its factorization.

12022022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128071.

The product of its (nonzero) digits is 64, while the sum is 14.

It can be divided in two parts, 120220 and 22021, that added together give a palindrome (142241).

The spelling of 12022022021 in words is "twelve billion, twenty-two million, twenty-two thousand, twenty-one".