12022001321 has 4 divisors (see below), whose sum is σ = 13114910544. Its totient is φ = 10929092100.

The previous prime is 12022001311. The next prime is 12022001323. The reversal of 12022001321 is 12310022021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12022001321 is a prime.

It is a super-3 number, since 3×12022001321³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022001296 and 12022001305.

It is not an unprimeable number, because it can be changed into a prime (12022001323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546454595 + ... + 546454616.

It is an arithmetic number, because the mean of its divisors is an integer number (3278727636).

Almost surely, 2^12022001321 is an apocalyptic number.

12022001321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12022001321 is a deficient number, since it is larger than the sum of its proper divisors (1092909223).

12022001321 is a wasteful number, since it uses less digits than its factorization.

12022001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092909222.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12022001321 its reverse (12310022021), we get a palindrome (24332023342).

The spelling of 12022001321 in words is "twelve billion, twenty-two million, one thousand, three hundred twenty-one".