1121222113123 has 16 divisors (see below), whose sum is σ = 1333520455680. Its totient is φ = 922351592736.

The previous prime is 1121222113073. The next prime is 1121222113147. The reversal of 1121222113123 is 3213112221211.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1121222113123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121222113094 and 1121222113103.

It is not an unprimeable number, because it can be changed into a prime (1121222113163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16502811 + ... + 16570612.

It is an arithmetic number, because the mean of its divisors is an integer number (83345028480).

Almost surely, 2^{1121222113123} is an apocalyptic number.

1121222113123 is a deficient number, since it is larger than the sum of its proper divisors (212298342557).

1121222113123 is a wasteful number, since it uses less digits than its factorization.

1121222113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33073626.

The product of its digits is 288, while the sum is 22.

Adding to 1121222113123 its reverse (3213112221211), we get a palindrome (4334334334334).

The spelling of 1121222113123 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred thirteen thousand, one hundred twenty-three".