12212222001 has 16 divisors (see below), whose sum is σ = 18631574400. Its totient is φ = 6969984768.

The previous prime is 12212221997. The next prime is 12212222027. The reversal of 12212222001 is 10022221221.

It is not a de Polignac number, because 12212222001 - 2² = 12212221997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212222081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333336 + ... + 368153.

It is an arithmetic number, because the mean of its divisors is an integer number (1164473400).

Almost surely, 2^12212222001 is an apocalyptic number.

It is an amenable number.

12212222001 is a deficient number, since it is larger than the sum of its proper divisors (6419352399).

12212222001 is an equidigital number, since it uses as much as digits as its factorization.

12212222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702328.

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

Adding to 12212222001 its reverse (10022221221), we get a palindrome (22234443222).

It can be divided in two parts, 1221 and 2222001, that added together give a palindrome (2223222).

The spelling of 12212222001 in words is "twelve billion, two hundred twelve million, two hundred twenty-two thousand, one".