1222001122123 has 4 divisors (see below), whose sum is σ = 1222306092720. Its totient is φ = 1221696151528.

The previous prime is 1222001122109. The next prime is 1222001122157. The reversal of 1222001122123 is 3212211002221.

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 1222001122123 - 2⁹ = 1222001121611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222001122123.

It is not an unprimeable number, because it can be changed into a prime (1222001122183) 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, 152479288 + ... + 152487301.

It is an arithmetic number, because the mean of its divisors is an integer number (305576523180).

Almost surely, 2^{1222001122123} is an apocalyptic number.

1222001122123 is a deficient number, since it is larger than the sum of its proper divisors (304970597).

1222001122123 is an equidigital number, since it uses as much as digits as its factorization.

1222001122123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304970596.

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

Adding to 1222001122123 its reverse (3212211002221), we get a palindrome (4434212124344).

The spelling of 1222001122123 in words is "one trillion, two hundred twenty-two billion, one million, one hundred twenty-two thousand, one hundred twenty-three".