1222111020123 has 144 divisors (see below), whose sum is σ = 2167973174016. Its totient is φ = 660604170240.

The previous prime is 1222111020071. The next prime is 1222111020149. The reversal of 1222111020123 is 3210201112221.

It is not a de Polignac number, because 1222111020123 - 2¹⁰ = 1222111019099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222111020096 and 1222111020105.

It is not an unprimeable number, because it can be changed into a prime (1222111020523) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 112766661 + ... + 112777497.

It is an arithmetic number, because the mean of its divisors is an integer number (15055369264).

Almost surely, 2^{1222111020123} is an apocalyptic number.

1222111020123 is a deficient number, since it is larger than the sum of its proper divisors (945862153893).

1222111020123 is a wasteful number, since it uses less digits than its factorization.

1222111020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11074 (or 11064 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1222111020123 its reverse (3210201112221), we get a palindrome (4432312132344).

The spelling of 1222111020123 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, twenty thousand, one hundred twenty-three".