121297937198 has 8 divisors (see below), whose sum is σ = 181958969640. Its totient is φ = 60644947320.

The previous prime is 121297937197. The next prime is 121297937207. The reversal of 121297937198 is 891739792121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121297937197) 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, 1972793 + ... + 2033348.

It is an arithmetic number, because the mean of its divisors is an integer number (22744871205).

Almost surely, 2^121297937198 is an apocalyptic number.

121297937198 is a deficient number, since it is larger than the sum of its proper divisors (60661032442).

121297937198 is a wasteful number, since it uses less digits than its factorization.

121297937198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021282.

The product of its digits is 3429216, while the sum is 59.

The spelling of 121297937198 in words is "one hundred twenty-one billion, two hundred ninety-seven million, nine hundred thirty-seven thousand, one hundred ninety-eight".