123121010130 has 32 divisors (see below), whose sum is σ = 296726803200. Its totient is φ = 32694893952.

The previous prime is 123121010123. The next prime is 123121010143. The reversal of 123121010130 is 31010121321.

It is a happy number.

123121010130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8578675 + ... + 8593014.

It is an arithmetic number, because the mean of its divisors is an integer number (9272712600).

Almost surely, 2^123121010130 is an apocalyptic number.

123121010130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123121010130 is an abundant number, since it is smaller than the sum of its proper divisors (173605793070).

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

123121010130 is a wasteful number, since it uses less digits than its factorization.

123121010130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17171938.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123121010130 its reverse (31010121321), we get a palindrome (154131131451).

The spelling of 123121010130 in words is "one hundred twenty-three billion, one hundred twenty-one million, ten thousand, one hundred thirty".