12210220191 has 16 divisors (see below), whose sum is σ = 17547386976. Its totient is φ = 7507654656.

The previous prime is 12210220163. The next prime is 12210220219. The reversal of 12210220191 is 19102201221.

It is an interprime number because it is at equal distance from previous prime (12210220163) and next prime (12210220219).

It is not a de Polignac number, because 12210220191 - 2¹⁰ = 12210219167 is a prime.

It is a super-2 number, since 2×12210220191² (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 (12210220091) 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, 84690 + ... + 177743.

It is an arithmetic number, because the mean of its divisors is an integer number (1096711686).

Almost surely, 2^12210220191 is an apocalyptic number.

12210220191 is a deficient number, since it is larger than the sum of its proper divisors (5337166785).

12210220191 is a wasteful number, since it uses less digits than its factorization.

12210220191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263642.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 12210220191 in words is "twelve billion, two hundred ten million, two hundred twenty thousand, one hundred ninety-one".