12021224201 has 4 divisors (see below), whose sum is σ = 13738541952. Its totient is φ = 10303906452.

The previous prime is 12021224197. The next prime is 12021224239. The reversal of 12021224201 is 10242212021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10242212021 = 1747 ⋅5862743.

It is not a de Polignac number, because 12021224201 - 2² = 12021224197 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 12021224201.

It is not an unprimeable number, because it can be changed into a prime (12021224291) 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, 858658865 + ... + 858658878.

It is an arithmetic number, because the mean of its divisors is an integer number (3434635488).

Almost surely, 2^12021224201 is an apocalyptic number.

It is an amenable number.

12021224201 is a deficient number, since it is larger than the sum of its proper divisors (1717317751).

12021224201 is an equidigital number, since it uses as much as digits as its factorization.

12021224201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717317750.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12021224201 its reverse (10242212021), we get a palindrome (22263436222).

The spelling of 12021224201 in words is "twelve billion, twenty-one million, two hundred twenty-four thousand, two hundred one".