122001220123 has 4 divisors (see below), whose sum is σ = 122002153488. Its totient is φ = 122000286760.

The previous prime is 122001220057. The next prime is 122001220139. The reversal of 122001220123 is 321022100221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 321022100221 = 157 ⋅2044726753.

It is a cyclic number.

It is not a de Polignac number, because 122001220123 - 2⁹ = 122001219611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122001220097 and 122001220106.

It is not an unprimeable number, because it can be changed into a prime (122001220153) 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, 230911 + ... + 545272.

It is an arithmetic number, because the mean of its divisors is an integer number (30500538372).

Almost surely, 2^122001220123 is an apocalyptic number.

122001220123 is a deficient number, since it is larger than the sum of its proper divisors (933365).

122001220123 is an equidigital number, since it uses as much as digits as its factorization.

122001220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933364.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 122001220123 its reverse (321022100221), we get a palindrome (443023320344).

The spelling of 122001220123 in words is "one hundred twenty-two billion, one million, two hundred twenty thousand, one hundred twenty-three".