1012203001111 has 4 divisors (see below), whose sum is σ = 1035742605832. Its totient is φ = 988663396392.

The previous prime is 1012203001099. The next prime is 1012203001129. The reversal of 1012203001111 is 1111003022101.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012203001111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012203001091 and 1012203001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012203071111) 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, 11769802296 + ... + 11769802381.

It is an arithmetic number, because the mean of its divisors is an integer number (258935651458).

Almost surely, 2^{1012203001111} is an apocalyptic number.

1012203001111 is a deficient number, since it is larger than the sum of its proper divisors (23539604721).

1012203001111 is an equidigital number, since it uses as much as digits as its factorization.

1012203001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23539604720.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1012203001111 its reverse (1111003022101), we get a palindrome (2123206023212).

The spelling of 1012203001111 in words is "one trillion, twelve billion, two hundred three million, one thousand, one hundred eleven".