1200233021123 has 4 divisors (see below), whose sum is σ = 1270834963560. Its totient is φ = 1129631078688.

The previous prime is 1200233021107. The next prime is 1200233021149. The reversal of 1200233021123 is 3211203320021.

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 1200233021123 - 2⁴ = 1200233021107 is a prime.

It is a super-4 number, since 4×1200233021123⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200233021095 and 1200233021104.

It is not an unprimeable number, because it can be changed into a prime (1200233011123) 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, 35300971193 + ... + 35300971226.

It is an arithmetic number, because the mean of its divisors is an integer number (317708740890).

Almost surely, 2^{1200233021123} is an apocalyptic number.

1200233021123 is a deficient number, since it is larger than the sum of its proper divisors (70601942437).

1200233021123 is an equidigital number, since it uses as much as digits as its factorization.

1200233021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70601942436.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1200233021123 its reverse (3211203320021), we get a palindrome (4411436341144).

The spelling of 1200233021123 in words is "one trillion, two hundred billion, two hundred thirty-three million, twenty-one thousand, one hundred twenty-three".