1203201231111 has 12 divisors (see below), whose sum is σ = 1895953455240. Its totient is φ = 729212867280.

The previous prime is 1203201231101. The next prime is 1203201231137. The reversal of 1203201231111 is 1111321023021.

1203201231111 is a `hidden beast` number, since 1 + 2 + 0 + 320 + 1 + 231 + 111 = 666.

It is not a de Polignac number, because 1203201231111 - 2⁹ = 1203201230599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203201231101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6076773796 + ... + 6076773993.

It is an arithmetic number, because the mean of its divisors is an integer number (157996121270).

Almost surely, 2^{1203201231111} is an apocalyptic number.

1203201231111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1203201231111 is a deficient number, since it is larger than the sum of its proper divisors (692752224129).

1203201231111 is a wasteful number, since it uses less digits than its factorization.

1203201231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12153547806 (or 12153547803 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1203201231111 its reverse (1111321023021), we get a palindrome (2314522254132).

The spelling of 1203201231111 in words is "one trillion, two hundred three billion, two hundred one million, two hundred thirty-one thousand, one hundred eleven".