123020121120 has 96 divisors (see below), whose sum is σ = 417322124352. Its totient is φ = 30281874432.

The previous prime is 123020121079. The next prime is 123020121127. The reversal of 123020121120 is 21121020321.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a self number, because there is not a number n which added to its sum of digits gives 123020121120.

It is not an unprimeable number, because it can be changed into a prime (123020121127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9851142 + ... + 9863621.

It is an arithmetic number, because the mean of its divisors is an integer number (4347105462).

Almost surely, 2^123020121120 is an apocalyptic number.

123020121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123020121120 is an abundant number, since it is smaller than the sum of its proper divisors (294302003232).

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

123020121120 is a wasteful number, since it uses less digits than its factorization.

123020121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19714794 (or 19714786 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 123020121120 its reverse (21121020321), we get a palindrome (144141141441).

The spelling of 123020121120 in words is "one hundred twenty-three billion, twenty million, one hundred twenty-one thousand, one hundred twenty".