12221122001 has 8 divisors (see below), whose sum is σ = 13345598208. Its totient is φ = 11098890000.

The previous prime is 12221121947. The next prime is 12221122037. The reversal of 12221122001 is 10022112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12221122001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221122301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549650 + ... + 571451.

It is an arithmetic number, because the mean of its divisors is an integer number (1668199776).

Almost surely, 2^12221122001 is an apocalyptic number.

12221122001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12221122001 is a deficient number, since it is larger than the sum of its proper divisors (1124476207).

12221122001 is a wasteful number, since it uses less digits than its factorization.

12221122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122103.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12221122001 its reverse (10022112221), we get a palindrome (22243234222).

The spelling of 12221122001 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, one".