131121122 has 16 divisors (see below), whose sum is σ = 221961600. Its totient is φ = 57545040.

The previous prime is 131121121. The next prime is 131121127. The reversal of 131121122 is 221121131.

It is a junction number, because it is equal to n+sod(n) for n = 131121097 and 131121106.

It is not an unprimeable number, because it can be changed into a prime (131121121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102122 + ... + 103397.

It is an arithmetic number, because the mean of its divisors is an integer number (13872600).

Almost surely, 2^131121122 is an apocalyptic number.

131121122 is a deficient number, since it is larger than the sum of its proper divisors (90840478).

131121122 is a wasteful number, since it uses less digits than its factorization.

131121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205561.

The product of its digits is 24, while the sum is 14.

The square root of 131121122 is about 11450.8131588984. The cubic root of 131121122 is about 508.0317859913.

Adding to 131121122 its reverse (221121131), we get a palindrome (352242253).

Subtracting 131121122 from its reverse (221121131), we obtain a palindrome (90000009).

The spelling of 131121122 in words is "one hundred thirty-one million, one hundred twenty-one thousand, one hundred twenty-two".