123121020130 has 16 divisors (see below), whose sum is σ = 223769467584. Its totient is φ = 48770267760.

The previous prime is 123121020103. The next prime is 123121020179. The reversal of 123121020130 is 31020121321.

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, 59766456 + ... + 59768515.

It is an arithmetic number, because the mean of its divisors is an integer number (13985591724).

Almost surely, 2^123121020130 is an apocalyptic number.

123121020130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123121020130 is a deficient number, since it is larger than the sum of its proper divisors (100648447454).

123121020130 is a wasteful number, since it uses less digits than its factorization.

123121020130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119535081.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123121020130 its reverse (31020121321), we get a palindrome (154141141451).

The spelling of 123121020130 in words is "one hundred twenty-three billion, one hundred twenty-one million, twenty thousand, one hundred thirty".