1121320023123 has 16 divisors (see below), whose sum is σ = 1506568390272. Its totient is φ = 741809640000.

The previous prime is 1121320023107. The next prime is 1121320023149. The reversal of 1121320023123 is 3213200231211.

It is not a de Polignac number, because 1121320023123 - 2⁴ = 1121320023107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121320023123.

It is not an unprimeable number, because it can be changed into a prime (1121320073123) 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, 13403223 + ... + 13486623.

It is an arithmetic number, because the mean of its divisors is an integer number (94160524392).

Almost surely, 2^{1121320023123} is an apocalyptic number.

1121320023123 is a deficient number, since it is larger than the sum of its proper divisors (385248367149).

1121320023123 is a wasteful number, since it uses less digits than its factorization.

1121320023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117746.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1121320023123 its reverse (3213200231211), we get a palindrome (4334520254334).

The spelling of 1121320023123 in words is "one trillion, one hundred twenty-one billion, three hundred twenty million, twenty-three thousand, one hundred twenty-three".