12011210221198 has 4 divisors (see below), whose sum is σ = 18016815331800. Its totient is φ = 6005605110598.

The previous prime is 12011210221193. The next prime is 12011210221271. The reversal of 12011210221198 is 89112201211021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12011210221198² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011210221193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3002802555298 + ... + 3002802555301.

It is an arithmetic number, because the mean of its divisors is an integer number (4504203832950).

Almost surely, 2^{12011210221198} is an apocalyptic number.

12011210221198 is a deficient number, since it is larger than the sum of its proper divisors (6005605110602).

12011210221198 is an equidigital number, since it uses as much as digits as its factorization.

12011210221198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005605110601.

The product of its (nonzero) digits is 1152, while the sum is 31.

The spelling of 12011210221198 in words is "twelve trillion, eleven billion, two hundred ten million, two hundred twenty-one thousand, one hundred ninety-eight".