121123220122 has 8 divisors (see below), whose sum is σ = 183984638400. Its totient is φ = 59795007324.

The previous prime is 121123220063. The next prime is 121123220131. The reversal of 121123220122 is 221022321121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121123220122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383301172 + ... + 383301487.

It is an arithmetic number, because the mean of its divisors is an integer number (22998079800).

Almost surely, 2^121123220122 is an apocalyptic number.

121123220122 is a deficient number, since it is larger than the sum of its proper divisors (62861418278).

121123220122 is an equidigital number, since it uses as much as digits as its factorization.

121123220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766602740.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121123220122 its reverse (221022321121), we get a palindrome (342145541243).

The spelling of 121123220122 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty thousand, one hundred twenty-two".