1200113111243 has 8 divisors (see below), whose sum is σ = 1211491893408. Its totient is φ = 1188747633024.

The previous prime is 1200113111231. The next prime is 1200113111251. The reversal of 1200113111243 is 3421113110021.

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 1200113111243 - 2⁴ = 1200113111227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200113111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3144671 + ... + 3505592.

It is an arithmetic number, because the mean of its divisors is an integer number (151436486676).

Almost surely, 2^{1200113111243} is an apocalyptic number.

1200113111243 is a deficient number, since it is larger than the sum of its proper divisors (11378782165).

1200113111243 is a wasteful number, since it uses less digits than its factorization.

1200113111243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651973.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1200113111243 its reverse (3421113110021), we get a palindrome (4621226221264).

The spelling of 1200113111243 in words is "one trillion, two hundred billion, one hundred thirteen million, one hundred eleven thousand, two hundred forty-three".