1230320121020 has 48 divisors (see below), whose sum is σ = 2729333728800. Its totient is φ = 464567362560.

The previous prime is 1230320121007. The next prime is 1230320121067. The reversal of 1230320121020 is 201210230321.

It is a self number, because there is not a number n which added to its sum of digits gives 1230320121020.

It is a congruent 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, 5654225 + ... + 5867784.

It is an arithmetic number, because the mean of its divisors is an integer number (56861119350).

Almost surely, 2^{1230320121020} is an apocalyptic number.

1230320121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230320121020 is an abundant number, since it is smaller than the sum of its proper divisors (1499013607780).

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

1230320121020 is a wasteful number, since it uses less digits than its factorization.

1230320121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11522318 (or 11522316 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1230320121020 its reverse (201210230321), we get a palindrome (1431530351341).

The spelling of 1230320121020 in words is "one trillion, two hundred thirty billion, three hundred twenty million, one hundred twenty-one thousand, twenty".