12211212201 has 16 divisors (see below), whose sum is σ = 17691402240. Its totient is φ = 7463558160.

The previous prime is 12211212161. The next prime is 12211212257. The reversal of 12211212201 is 10221211221.

It is not a de Polignac number, because 12211212201 - 2⁹ = 12211211689 is a prime.

It is a super-2 number, since 2×12211212201² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211212401) 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, 3453585 + ... + 3457118.

It is an arithmetic number, because the mean of its divisors is an integer number (1105712640).

Almost surely, 2^12211212201 is an apocalyptic number.

It is an amenable number.

12211212201 is a deficient number, since it is larger than the sum of its proper divisors (5480190039).

12211212201 is a wasteful number, since it uses less digits than its factorization.

12211212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6910756.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12211212201 its reverse (10221211221), we get a palindrome (22432423422).

The spelling of 12211212201 in words is "twelve billion, two hundred eleven million, two hundred twelve thousand, two hundred one".