12320121020220 has 108 divisors (see below), whose sum is σ = 40466859143256. Its totient is φ = 3032645166720.

The previous prime is 12320121020197. The next prime is 12320121020257. The reversal of 12320121020220 is 2202012102321.

12320121020220 is a `hidden beast` number, since 1 + 2 + 320 + 121 + 0 + 2 + 0 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12320121020193 and 12320121020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 202469926 + ... + 202530765.

Almost surely, 2^{12320121020220} is an apocalyptic number.

12320121020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320121020220 is an abundant number, since it is smaller than the sum of its proper divisors (28146738123036).

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

12320121020220 is a wasteful number, since it uses less digits than its factorization.

12320121020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405000732 (or 405000714 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12320121020220 its reverse (2202012102321), we get a palindrome (14522133122541).

The spelling of 12320121020220 in words is "twelve trillion, three hundred twenty billion, one hundred twenty-one million, twenty thousand, two hundred twenty".