1200113111203 has 2 divisors, whose sum is σ = 1200113111204. Its totient is φ = 1200113111202.

The previous prime is 1200113111201. The next prime is 1200113111227. The reversal of 1200113111203 is 3021113110021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200113111203 - 2¹ = 1200113111201 is a prime.

Together with 1200113111201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1200113111201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600056555601 + 600056555602.

It is an arithmetic number, because the mean of its divisors is an integer number (600056555602).

Almost surely, 2^{1200113111203} is an apocalyptic number.

1200113111203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200113111203 is an equidigital number, since it uses as much as digits as its factorization.

1200113111203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1200113111203 its reverse (3021113110021), we get a palindrome (4221226221224).

The spelling of 1200113111203 in words is "one trillion, two hundred billion, one hundred thirteen million, one hundred eleven thousand, two hundred three".