111201201998 has 8 divisors (see below), whose sum is σ = 175580845320. Its totient is φ = 52674253560.

The previous prime is 111201201971. The next prime is 111201202039. The reversal of 111201201998 is 899102102111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1463173673 + ... + 1463173748.

It is an arithmetic number, because the mean of its divisors is an integer number (21947605665).

Almost surely, 2^111201201998 is an apocalyptic number.

111201201998 is a deficient number, since it is larger than the sum of its proper divisors (64379643322).

111201201998 is a wasteful number, since it uses less digits than its factorization.

111201201998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926347442.

The product of its (nonzero) digits is 2592, while the sum is 35.

The spelling of 111201201998 in words is "one hundred eleven billion, two hundred one million, two hundred one thousand, nine hundred ninety-eight".