121012320120320 has 80 divisors (see below), whose sum is σ = 290169162114480. Its totient is φ = 48401054859264.

The previous prime is 121012320120317. The next prime is 121012320120337. The reversal of 121012320120320 is 23021023210121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121012320120292 and 121012320120301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30214904 + ... + 33984776.

It is an arithmetic number, because the mean of its divisors is an integer number (3627114526431).

Almost surely, 2^{121012320120320} is an apocalyptic number.

121012320120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012320120320 is an abundant number, since it is smaller than the sum of its proper divisors (169156841994160).

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

121012320120320 is an equidigital number, since it uses as much as digits as its factorization.

121012320120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782435 (or 3782419 counting only the distinct ones).

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

Adding to 121012320120320 its reverse (23021023210121), we get a palindrome (144033343330441).

The spelling of 121012320120320 in words is "one hundred twenty-one trillion, twelve billion, three hundred twenty million, one hundred twenty thousand, three hundred twenty".