1220122112123 has 4 divisors (see below), whose sum is σ = 1220137106760. Its totient is φ = 1220107117488.

The previous prime is 1220122112117. The next prime is 1220122112173. The reversal of 1220122112123 is 3212112210221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220122112123 - 2¹⁸ = 1220121849979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220122112095 and 1220122112104.

It is not an unprimeable number, because it can be changed into a prime (1220122112173) 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, 7374593 + ... + 7538226.

It is an arithmetic number, because the mean of its divisors is an integer number (305034276690).

Almost surely, 2^{1220122112123} is an apocalyptic number.

1220122112123 is a deficient number, since it is larger than the sum of its proper divisors (14994637).

1220122112123 is an equidigital number, since it uses as much as digits as its factorization.

1220122112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14994636.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1220122112123 its reverse (3212112210221), we get a palindrome (4432234322344).

The spelling of 1220122112123 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twenty-three".