101131111111 has 4 divisors (see below), whose sum is σ = 102845197800. Its totient is φ = 99417024424.

The previous prime is 101131111099. The next prime is 101131111129. The reversal of 101131111111 is 111111131101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 101131111111 - 2¹⁵ = 101131078343 is a prime.

It is a Duffinian number.

101131111111 is a modest number, since divided by 111111 gives 101131 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 101131111091 and 101131111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101131111511) 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, 857043256 + ... + 857043373.

It is an arithmetic number, because the mean of its divisors is an integer number (25711299450).

Almost surely, 2^101131111111 is an apocalyptic number.

101131111111 is a deficient number, since it is larger than the sum of its proper divisors (1714086689).

101131111111 is an equidigital number, since it uses as much as digits as its factorization.

101131111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714086688.

The product of its (nonzero) digits is 3, while the sum is 13.

Adding to 101131111111 its reverse (111111131101), we get a palindrome (212242242212).

The spelling of 101131111111 in words is "one hundred one billion, one hundred thirty-one million, one hundred eleven thousand, one hundred eleven".