131000121111 has 16 divisors (see below), whose sum is σ = 177273352160. Its totient is φ = 86033041920.

The previous prime is 131000121053. The next prime is 131000121137. The reversal of 131000121111 is 111121000131.

It is not a de Polignac number, because 131000121111 - 2⁷ = 131000120983 is a prime.

It is a super-2 number, since 2×131000121111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179230 + ... + 542331.

It is an arithmetic number, because the mean of its divisors is an integer number (11079584510).

Almost surely, 2^131000121111 is an apocalyptic number.

131000121111 is a deficient number, since it is larger than the sum of its proper divisors (46273231049).

131000121111 is an equidigital number, since it uses as much as digits as its factorization.

131000121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722466.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 131000121111 its reverse (111121000131), we get a palindrome (242121121242).

The spelling of 131000121111 in words is "one hundred thirty-one billion, one hundred twenty-one thousand, one hundred eleven".