123121034130 has 16 divisors (see below), whose sum is σ = 295490481984. Its totient is φ = 32832275760.

The previous prime is 123121034123. The next prime is 123121034147. The reversal of 123121034130 is 31430121321.

It is a junction number, because it is equal to n+sod(n) for n = 123121034097 and 123121034106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2052017206 + ... + 2052017265.

It is an arithmetic number, because the mean of its divisors is an integer number (18468155124).

Almost surely, 2^123121034130 is an apocalyptic number.

123121034130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123121034130 is an abundant number, since it is smaller than the sum of its proper divisors (172369447854).

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

123121034130 is a wasteful number, since it uses less digits than its factorization.

123121034130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104034481.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123121034130 its reverse (31430121321), we get a palindrome (154551155451).

The spelling of 123121034130 in words is "one hundred twenty-three billion, one hundred twenty-one million, thirty-four thousand, one hundred thirty".