1121122220123 has 2 divisors, whose sum is σ = 1121122220124. Its totient is φ = 1121122220122.

The previous prime is 1121122220111. The next prime is 1121122220143. The reversal of 1121122220123 is 3210222211211.

It is an a-pointer prime, because the next prime (1121122220143) can be obtained adding 1121122220123 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121122220123 - 2²⁶ = 1121055111259 is a prime.

It is a super-2 number, since 2×1121122220123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121122220095 and 1121122220104.

It is not a weakly prime, because it can be changed into another prime (1121122220143) by changing a digit.

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 as a sum of consecutive naturals, namely, 560561110061 + 560561110062.

It is an arithmetic number, because the mean of its divisors is an integer number (560561110062).

Almost surely, 2^{1121122220123} is an apocalyptic number.

1121122220123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121122220123 is an equidigital number, since it uses as much as digits as its factorization.

1121122220123 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1121122220123 its reverse (3210222211211), we get a palindrome (4331344431334).

The spelling of 1121122220123 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-three".