1211320331198 has 8 divisors (see below), whose sum is σ = 1912611049320. Its totient is φ = 573783314760.

The previous prime is 1211320331153. The next prime is 1211320331203. The reversal of 1211320331198 is 8911330231121.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15938425373 + ... + 15938425448.

It is an arithmetic number, because the mean of its divisors is an integer number (239076381165).

Almost surely, 2^{1211320331198} is an apocalyptic number.

1211320331198 is a deficient number, since it is larger than the sum of its proper divisors (701290718122).

1211320331198 is a wasteful number, since it uses less digits than its factorization.

1211320331198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31876850842.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 1211320331198 in words is "one trillion, two hundred eleven billion, three hundred twenty million, three hundred thirty-one thousand, one hundred ninety-eight".