1200022023123 has 48 divisors (see below), whose sum is σ = 2190682530816. Its totient is φ = 614848475520.

The previous prime is 1200022023091. The next prime is 1200022023139. The reversal of 1200022023123 is 3213202200021.

It is not a de Polignac number, because 1200022023123 - 2⁵ = 1200022023091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200022023096 and 1200022023105.

It is not an unprimeable number, because it can be changed into a prime (1200022021123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11809915 + ... + 11911092.

It is an arithmetic number, because the mean of its divisors is an integer number (45639219392).

Almost surely, 2^{1200022023123} is an apocalyptic number.

1200022023123 is a deficient number, since it is larger than the sum of its proper divisors (990660507693).

1200022023123 is a wasteful number, since it uses less digits than its factorization.

1200022023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23721104 (or 23721101 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1200022023123 its reverse (3213202200021), we get a palindrome (4413224223144).

The spelling of 1200022023123 in words is "one trillion, two hundred billion, twenty-two million, twenty-three thousand, one hundred twenty-three".