12022001 has 4 divisors (see below), whose sum is σ = 12113904. Its totient is φ = 11930100.

The previous prime is 12021991. The next prime is 12022007. The reversal of 12022001 is 10022021.

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 not a de Polignac number, because 12022001 - 2¹⁸ = 11759857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12022001.

It is not an unprimeable number, because it can be changed into a prime (12022007) 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, 45755 + ... + 46016.

It is an arithmetic number, because the mean of its divisors is an integer number (3028476).

Almost surely, 2^12022001 is an apocalyptic number.

It is an amenable number.

12022001 is a deficient number, since it is larger than the sum of its proper divisors (91903).

12022001 is an equidigital number, since it uses as much as digits as its factorization.

12022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91902.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 12022001 is about 3467.2757317525. The cubic root of 12022001 is about 229.0826789677.

Adding to 12022001 its reverse (10022021), we get a palindrome (22044022).

The spelling of 12022001 in words is "twelve million, twenty-two thousand, one".