12222201001 has 4 divisors (see below), whose sum is σ = 12224034900. Its totient is φ = 12220367104.

The previous prime is 12222200987. The next prime is 12222201029. The reversal of 12222201001 is 10010222221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10010222221 = 83 ⋅120605087.

It can be written as a sum of positive squares in 2 ways, for example, as 7856163225 + 4366037776 = 88635^2 + 66076^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222201001 - 2²³ = 12213812393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222261001) 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, 906916 + ... + 920293.

It is an arithmetic number, because the mean of its divisors is an integer number (3056008725).

Almost surely, 2^12222201001 is an apocalyptic number.

It is an amenable number.

12222201001 is a deficient number, since it is larger than the sum of its proper divisors (1833899).

12222201001 is an equidigital number, since it uses as much as digits as its factorization.

12222201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833898.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12222201001 its reverse (10010222221), we get a palindrome (22232423222).

It can be divided in two parts, 1222220 and 1001, that added together give a palindrome (1223221).

The spelling of 12222201001 in words is "twelve billion, two hundred twenty-two million, two hundred one thousand, one".