1200213103123 has 4 divisors (see below), whose sum is σ = 1211430048120. Its totient is φ = 1188996158128.

The previous prime is 1200213103121. The next prime is 1200213103157. The reversal of 1200213103123 is 3213013120021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200213103123 - 2¹ = 1200213103121 is a prime.

It is a super-2 number, since 2×1200213103123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200213103123.

It is not an unprimeable number, because it can be changed into a prime (1200213103121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5608472338 + ... + 5608472551.

It is an arithmetic number, because the mean of its divisors is an integer number (302857512030).

Almost surely, 2^{1200213103123} is an apocalyptic number.

1200213103123 is a deficient number, since it is larger than the sum of its proper divisors (11216944997).

1200213103123 is a wasteful number, since it uses less digits than its factorization.

1200213103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11216944996.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1200213103123 its reverse (3213013120021), we get a palindrome (4413226223144).

The spelling of 1200213103123 in words is "one trillion, two hundred billion, two hundred thirteen million, one hundred three thousand, one hundred twenty-three".