12198358111 has 4 divisors (see below), whose sum is σ = 12231596512. Its totient is φ = 12165119712.

The previous prime is 12198358103. The next prime is 12198358201. The reversal of 12198358111 is 11185389121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11185389121 = 105761².

It is a cyclic number.

It is not a de Polignac number, because 12198358111 - 2³ = 12198358103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12198358411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16618650 + ... + 16619383.

It is an arithmetic number, because the mean of its divisors is an integer number (3057899128).

Almost surely, 2^12198358111 is an apocalyptic number.

12198358111 is a deficient number, since it is larger than the sum of its proper divisors (33238401).

12198358111 is an equidigital number, since it uses as much as digits as its factorization.

12198358111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33238400.

The product of its digits is 17280, while the sum is 40.

The spelling of 12198358111 in words is "twelve billion, one hundred ninety-eight million, three hundred fifty-eight thousand, one hundred eleven".