103400121018 has 16 divisors (see below), whose sum is σ = 206804363040. Its totient is φ = 34466020176.

The previous prime is 103400121017. The next prime is 103400121089. The reversal of 103400121018 is 810121004301.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 103400120985 and 103400121003.

It is not an unprimeable number, because it can be changed into a prime (103400121017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224968 + ... + 507356.

It is an arithmetic number, because the mean of its divisors is an integer number (12925272690).

Almost surely, 2^103400121018 is an apocalyptic number.

103400121018 is an abundant number, since it is smaller than the sum of its proper divisors (103404242022).

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

103400121018 is a wasteful number, since it uses less digits than its factorization.

103400121018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343421.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 103400121018 its reverse (810121004301), we get a palindrome (913521125319).

The spelling of 103400121018 in words is "one hundred three billion, four hundred million, one hundred twenty-one thousand, eighteen".