1203012423111 has 4 divisors (see below), whose sum is σ = 1604016564152. Its totient is φ = 802008282072.

The previous prime is 1203012423073. The next prime is 1203012423121. The reversal of 1203012423111 is 1113242103021.

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

It is not a de Polignac number, because 1203012423111 - 2¹⁷ = 1203012292039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203012423121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200502070516 + ... + 200502070521.

It is an arithmetic number, because the mean of its divisors is an integer number (401004141038).

Almost surely, 2^{1203012423111} is an apocalyptic number.

1203012423111 is a deficient number, since it is larger than the sum of its proper divisors (401004141041).

1203012423111 is an equidigital number, since it uses as much as digits as its factorization.

1203012423111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401004141040.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1203012423111 its reverse (1113242103021), we get a palindrome (2316254526132).

The spelling of 1203012423111 in words is "one trillion, two hundred three billion, twelve million, four hundred twenty-three thousand, one hundred eleven".