131101321122 has 32 divisors (see below), whose sum is σ = 291790848960. Its totient is φ = 43632253440.

The previous prime is 131101321121. The next prime is 131101321133. The reversal of 131101321122 is 221123101131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131101321095 and 131101321104.

It is not an unprimeable number, because it can be changed into a prime (131101321121) 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, 1859148 + ... + 1928375.

It is an arithmetic number, because the mean of its divisors is an integer number (9118464030).

Almost surely, 2^131101321122 is an apocalyptic number.

131101321122 is an abundant number, since it is smaller than the sum of its proper divisors (160689527838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131101321122 is a wasteful number, since it uses less digits than its factorization.

131101321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788175 (or 3788169 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 131101321122 its reverse (221123101131), we get a palindrome (352224422253).

The spelling of 131101321122 in words is "one hundred thirty-one billion, one hundred one million, three hundred twenty-one thousand, one hundred twenty-two".