12222212001 has 12 divisors (see below), whose sum is σ = 16529060976. Its totient is φ = 8033368840.

The previous prime is 12222211979. The next prime is 12222212003. The reversal of 12222212001 is 10021222221.

It is not a de Polignac number, because 12222212001 - 2¹⁰ = 12222210977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12222212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388971 + ... + 419216.

It is an arithmetic number, because the mean of its divisors is an integer number (1377421748).

Almost surely, 2^12222212001 is an apocalyptic number.

It is an amenable number.

12222212001 is a deficient number, since it is larger than the sum of its proper divisors (4306848975).

12222212001 is an frugal number, since it uses more digits than its factorization.

12222212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808332 (or 808261 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12222212001 its reverse (10021222221), we get a palindrome (22243434222).

The spelling of 12222212001 in words is "twelve billion, two hundred twenty-two million, two hundred twelve thousand, one".