121320231130120 has 256 divisors, whose sum is σ = 307034722990080. Its totient is φ = 42769390540800.

The previous prime is 121320231130099. The next prime is 121320231130139. The reversal of 121320231130120 is 21031132023121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 121320231130091 and 121320231130100.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1178352564 + ... + 1178455516.

It is an arithmetic number, because the mean of its divisors is an integer number (1199354386680).

Almost surely, 2^{121320231130120} is an apocalyptic number.

121320231130120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121320231130120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153517361495040).

121320231130120 is an abundant number, since it is smaller than the sum of its proper divisors (185714491859960).

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

121320231130120 is a wasteful number, since it uses less digits than its factorization.

121320231130120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103676 (or 103672 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121320231130120 its reverse (21031132023121), we get a palindrome (142351363153241).

The spelling of 121320231130120 in words is "one hundred twenty-one trillion, three hundred twenty billion, two hundred thirty-one million, one hundred thirty thousand, one hundred twenty".