12020222001 has 4 divisors (see below), whose sum is σ = 16026962672. Its totient is φ = 8013481332.

The previous prime is 12020221991. The next prime is 12020222003. The reversal of 12020222001 is 10022202021.

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 not a de Polignac number, because 12020222001 - 2⁶ = 12020221937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12020222003) 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, 2003370331 + ... + 2003370336.

It is an arithmetic number, because the mean of its divisors is an integer number (4006740668).

Almost surely, 2^12020222001 is an apocalyptic number.

It is an amenable number.

12020222001 is a deficient number, since it is larger than the sum of its proper divisors (4006740671).

12020222001 is an equidigital number, since it uses as much as digits as its factorization.

12020222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006740670.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12020222001 its reverse (10022202021), we get a palindrome (22042424022).

The spelling of 12020222001 in words is "twelve billion, twenty million, two hundred twenty-two thousand, one".