12222112111001 has 24 divisors (see below), whose sum is σ = 13250671507080. Its totient is φ = 11206655057664.

The previous prime is 12222112110983. The next prime is 12222112111129. The reversal of 12222112111001 is 10011121122221.

It can be written as a sum of positive squares in 4 ways, for example, as 2430995497225 + 9791116613776 = 1559165^2 + 3129076^2 .

It is not a de Polignac number, because 12222112111001 - 2⁶ = 12222112110937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222112117001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315561005 + ... + 315599733.

It is an arithmetic number, because the mean of its divisors is an integer number (552111312795).

Almost surely, 2^{12222112111001} is an apocalyptic number.

It is an amenable number.

12222112111001 is a deficient number, since it is larger than the sum of its proper divisors (1028559396079).

12222112111001 is an equidigital number, since it uses as much as digits as its factorization.

12222112111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39753 (or 39554 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12222112111001 its reverse (10011121122221), we get a palindrome (22233233233222).

The spelling of 12222112111001 in words is "twelve trillion, two hundred twenty-two billion, one hundred twelve million, one hundred eleven thousand, one".