123240121130 has 32 divisors (see below), whose sum is σ = 268435627776. Its totient is φ = 39768240384.

The previous prime is 123240121129. The next prime is 123240121153. The reversal of 123240121130 is 31121042321.

It is a super-2 number, since 2×123240121130² (a number of 23 digits) contains 22 as substring.

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, 51780374 + ... + 51782753.

It is an arithmetic number, because the mean of its divisors is an integer number (8388613368).

Almost surely, 2^123240121130 is an apocalyptic number.

123240121130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123240121130 is an abundant number, since it is smaller than the sum of its proper divisors (145195506646).

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

123240121130 is a wasteful number, since it uses less digits than its factorization.

123240121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103563158.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123240121130 its reverse (31121042321), we get a palindrome (154361163451).

The spelling of 123240121130 in words is "one hundred twenty-three billion, two hundred forty million, one hundred twenty-one thousand, one hundred thirty".