1230111013111 has 4 divisors (see below), whose sum is σ = 1233032892424. Its totient is φ = 1227189133800.

The previous prime is 1230111013099. The next prime is 1230111013127. The reversal of 1230111013111 is 1113101110321.

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-1230111013111 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 (1230111011111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460939025 + ... + 1460939866.

It is an arithmetic number, because the mean of its divisors is an integer number (308258223106).

Almost surely, 2^{1230111013111} is an apocalyptic number.

1230111013111 is a deficient number, since it is larger than the sum of its proper divisors (2921879313).

1230111013111 is an equidigital number, since it uses as much as digits as its factorization.

1230111013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921879312.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 1230111013111 its reverse (1113101110321), we get a palindrome (2343212123432).

The spelling of 1230111013111 in words is "one trillion, two hundred thirty billion, one hundred eleven million, thirteen thousand, one hundred eleven".