12120221210020 has 96 divisors (see below), whose sum is σ = 31739364437760. Its totient is φ = 3776966807040.

The previous prime is 12120221210003. The next prime is 12120221210159. The reversal of 12120221210020 is 2001212202121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12120221209976 and 12120221210003.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6839926 + ... + 8427634.

It is an arithmetic number, because the mean of its divisors is an integer number (330618379560).

Almost surely, 2^{12120221210020} is an apocalyptic number.

12120221210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120221210020 is an abundant number, since it is smaller than the sum of its proper divisors (19619143227740).

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

12120221210020 is a wasteful number, since it uses less digits than its factorization.

12120221210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592693 (or 1592691 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12120221210020 its reverse (2001212202121), we get a palindrome (14121433412141).

The spelling of 12120221210020 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, two hundred ten thousand, twenty".