121923296197 has 12 divisors (see below), whose sum is σ = 126729483660. Its totient is φ = 117159893760.

The previous prime is 121923296111. The next prime is 121923296347. The reversal of 121923296197 is 791692329121.

It can be written as a sum of positive squares in 2 ways, for example, as 51353904996 + 70569391201 = 226614^2 + 265649^2 .

It is a de Polignac number, because none of the positive numbers 2^k-121923296197 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 (121923296797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1243893 + ... + 1338325.

It is an arithmetic number, because the mean of its divisors is an integer number (10560790305).

Almost surely, 2^121923296197 is an apocalyptic number.

It is an amenable number.

121923296197 is a deficient number, since it is larger than the sum of its proper divisors (4806187463).

121923296197 is an frugal number, since it uses more digits than its factorization.

121923296197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94884 (or 94673 counting only the distinct ones).

The product of its digits is 734832, while the sum is 52.

The spelling of 121923296197 in words is "one hundred twenty-one billion, nine hundred twenty-three million, two hundred ninety-six thousand, one hundred ninety-seven".