122131018 has 8 divisors (see below), whose sum is σ = 185010660. Its totient is φ = 60460800.

The previous prime is 122130997. The next prime is 122131019. The reversal of 122131018 is 810131221.

It can be written as a sum of positive squares in 2 ways, for example, as 114639849 + 7491169 = 10707^2 + 2737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 122130986 and 122131004.

It is not an unprimeable number, because it can be changed into a prime (122131019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302103 + ... + 302506.

Almost surely, 2^122131018 is an apocalyptic number.

122131018 is a deficient number, since it is larger than the sum of its proper divisors (62879642).

122131018 is a wasteful number, since it uses less digits than its factorization.

122131018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604712.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 122131018 is about 11051.2903319024. The cubic root of 122131018 is about 496.1450457044.

Adding to 122131018 its reverse (810131221), we get a palindrome (932262239).

It can be divided in two parts, 12213 and 1018, that added together give a palindrome (13231).

The spelling of 122131018 in words is "one hundred twenty-two million, one hundred thirty-one thousand, eighteen".