122120121021193 has 4 divisors (see below), whose sum is σ = 122121211754308. Its totient is φ = 122119030288080.

The previous prime is 122120121021181. The next prime is 122120121021247. The reversal of 122120121021193 is 391120121021221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87936606012304 + 34183515008889 = 9377452^2 + 5846667^2 .

It is a cyclic number.

It is not a de Polignac number, because 122120121021193 - 2²⁹ = 122119584150281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122120121021113) 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, 545198598 + ... + 545422543.

It is an arithmetic number, because the mean of its divisors is an integer number (30530302938577).

Almost surely, 2^{122120121021193} is an apocalyptic number.

It is an amenable number.

122120121021193 is a deficient number, since it is larger than the sum of its proper divisors (1090733115).

122120121021193 is a wasteful number, since it uses less digits than its factorization.

122120121021193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090733114.

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 122120121021193 its sum of digits (28), we get a palindrome (122120121021221).

The spelling of 122120121021193 in words is "one hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, one hundred ninety-three".