131103221111 has 16 divisors (see below), whose sum is σ = 141047542080. Its totient is φ = 121413788160.

The previous prime is 131103221033. The next prime is 131103221153. The reversal of 131103221111 is 111122301131.

It is a cyclic number.

It is not a de Polignac number, because 131103221111 - 2¹⁸ = 131102958967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 131103221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131103220111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507665 + ... + 721061.

It is an arithmetic number, because the mean of its divisors is an integer number (8815471380).

Almost surely, 2^131103221111 is an apocalyptic number.

131103221111 is a deficient number, since it is larger than the sum of its proper divisors (9944320969).

131103221111 is a wasteful number, since it uses less digits than its factorization.

131103221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213994.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131103221111 its reverse (111122301131), we get a palindrome (242225522242).

The spelling of 131103221111 in words is "one hundred thirty-one billion, one hundred three million, two hundred twenty-one thousand, one hundred eleven".