12211122001 has 8 divisors (see below), whose sum is σ = 13153674240. Its totient is φ = 11269031952.

The previous prime is 12211121999. The next prime is 12211122013. The reversal of 12211122001 is 10022111221.

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

It is a cyclic number.

It is not a de Polignac number, because 12211122001 - 2¹ = 12211121999 is a prime.

It is a super-2 number, since 2×12211122001² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211122101) 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, 59665 + ... + 167278.

It is an arithmetic number, because the mean of its divisors is an integer number (1644209280).

Almost surely, 2^12211122001 is an apocalyptic number.

It is an amenable number.

12211122001 is a deficient number, since it is larger than the sum of its proper divisors (942552239).

12211122001 is a wasteful number, since it uses less digits than its factorization.

12211122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231095.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12211122001 its reverse (10022111221), we get a palindrome (22233233222).

The spelling of 12211122001 in words is "twelve billion, two hundred eleven million, one hundred twenty-two thousand, one".