1213103222123 has 16 divisors (see below), whose sum is σ = 1315371387456. Its totient is φ = 1112117385600.

The previous prime is 1213103222059. The next prime is 1213103222143. The reversal of 1213103222123 is 3212223013121.

It is not a de Polignac number, because 1213103222123 - 2⁶ = 1213103222059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213103222143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8798465 + ... + 8935277.

It is an arithmetic number, because the mean of its divisors is an integer number (82210711716).

Almost surely, 2^{1213103222123} is an apocalyptic number.

1213103222123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213103222123 is a deficient number, since it is larger than the sum of its proper divisors (102268165333).

1213103222123 is a wasteful number, since it uses less digits than its factorization.

1213103222123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141494.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1213103222123 its reverse (3212223013121), we get a palindrome (4425326235244).

It can be divided in two parts, 121310 and 3222123, that added together give a palindrome (3343433).

The spelling of 1213103222123 in words is "one trillion, two hundred thirteen billion, one hundred three million, two hundred twenty-two thousand, one hundred twenty-three".