101231112011 has 4 divisors (see below), whose sum is σ = 101231953512. Its totient is φ = 101230270512.

The previous prime is 101231112007. The next prime is 101231112023. The reversal of 101231112011 is 110211132101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 101231112011 - 2² = 101231112007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101231112041) 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, 202601 + ... + 493466.

It is an arithmetic number, because the mean of its divisors is an integer number (25307988378).

Almost surely, 2^101231112011 is an apocalyptic number.

101231112011 is a deficient number, since it is larger than the sum of its proper divisors (841501).

101231112011 is an equidigital number, since it uses as much as digits as its factorization.

101231112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841500.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 101231112011 its reverse (110211132101), we get a palindrome (211442244112).

The spelling of 101231112011 in words is "one hundred one billion, two hundred thirty-one million, one hundred twelve thousand, eleven".