12022421 has 8 divisors (see below), whose sum is σ = 12691200. Its totient is φ = 11357280.

The previous prime is 12022411. The next prime is 12022433. The reversal of 12022421 is 12422021.

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 12022421 - 2⁶ = 12022357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12022396 and 12022405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022411) 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, 8441 + ... + 9761.

It is an arithmetic number, because the mean of its divisors is an integer number (1586400).

Almost surely, 2^12022421 is an apocalyptic number.

It is an amenable number.

12022421 is a deficient number, since it is larger than the sum of its proper divisors (668779).

12022421 is a wasteful number, since it uses less digits than its factorization.

12022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819.

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

The square root of 12022421 is about 3467.3362975056. The cubic root of 12022421 is about 229.0853466768.

Adding to 12022421 its reverse (12422021), we get a palindrome (24444442).

The spelling of 12022421 in words is "twelve million, twenty-two thousand, four hundred twenty-one".