1200111321 has 8 divisors (see below), whose sum is σ = 1655326080. Its totient is φ = 772485392.

The previous prime is 1200111239. The next prime is 1200111323. The reversal of 1200111321 is 1231110021.

1200111321 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200111321 - 2¹⁴ = 1200094937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200111297 and 1200111306.

It is not an unprimeable number, because it can be changed into a prime (1200111323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6897105 + ... + 6897278.

It is an arithmetic number, because the mean of its divisors is an integer number (206915760).

Almost surely, 2^1200111321 is an apocalyptic number.

It is an amenable number.

1200111321 is a deficient number, since it is larger than the sum of its proper divisors (455214759).

1200111321 is a wasteful number, since it uses less digits than its factorization.

1200111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13794415.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1200111321 is about 34642.6228943479. The cubic root of 1200111321 is about 1062.6914282262.

Adding to 1200111321 its reverse (1231110021), we get a palindrome (2431221342).

The spelling of 1200111321 in words is "one billion, two hundred million, one hundred eleven thousand, three hundred twenty-one".