12211102191 has 16 divisors (see below), whose sum is σ = 17141472000. Its totient is φ = 7710887808.

The previous prime is 12211102187. The next prime is 12211102199. The reversal of 12211102191 is 19120111221.

It is not a de Polignac number, because 12211102191 - 2² = 12211102187 is a prime.

It is a super-2 number, since 2×12211102191² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211102199) 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, 368110 + ... + 399908.

It is an arithmetic number, because the mean of its divisors is an integer number (1071342000).

Almost surely, 2^12211102191 is an apocalyptic number.

12211102191 is a deficient number, since it is larger than the sum of its proper divisors (4930369809).

12211102191 is a wasteful number, since it uses less digits than its factorization.

12211102191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38558.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 12211102191 in words is "twelve billion, two hundred eleven million, one hundred two thousand, one hundred ninety-one".