131122020112 has 10 divisors (see below), whose sum is σ = 254048913998. Its totient is φ = 65561010048.

The previous prime is 131122020109. The next prime is 131122020121. The reversal of 131122020112 is 211020221131.

It can be written as a sum of positive squares in only one way, i.e., 97741268496 + 33380751616 = 312636^2 + 182704^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 8195126257 = 131122020112 / (1 + 3 + 1 + 1 + 2 + 2 + 0 + 2 + 0 + 1 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4097563113 + ... + 4097563144.

Almost surely, 2^131122020112 is an apocalyptic number.

It is an amenable number.

131122020112 is a deficient number, since it is larger than the sum of its proper divisors (122926893886).

131122020112 is an equidigital number, since it uses as much as digits as its factorization.

131122020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8195126265 (or 8195126259 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 131122020112 its reverse (211020221131), we get a palindrome (342142241243).

The spelling of 131122020112 in words is "one hundred thirty-one billion, one hundred twenty-two million, twenty thousand, one hundred twelve".