121220000197 has 8 divisors (see below), whose sum is σ = 125135386880. Its totient is φ = 117304930080.

The previous prime is 121220000179. The next prime is 121220000263. The reversal of 121220000197 is 791000022121.

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

It is a cyclic number.

It is not a de Polignac number, because 121220000197 - 2²⁷ = 121085782469 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 (121220000597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886129 + ... + 1013737.

It is an arithmetic number, because the mean of its divisors is an integer number (15641923360).

Almost surely, 2^121220000197 is an apocalyptic number.

It is an amenable number.

121220000197 is a deficient number, since it is larger than the sum of its proper divisors (3915386683).

121220000197 is a wasteful number, since it uses less digits than its factorization.

121220000197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158283.

The product of its (nonzero) digits is 504, while the sum is 25.

The spelling of 121220000197 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred ninety-seven", and thus it is an aban number.