20120012320220 has 48 divisors (see below), whose sum is σ = 42588141173760. Its totient is φ = 7983993153024.

The previous prime is 20120012320201. The next prime is 20120012320229. The reversal of 20120012320220 is 2202321002102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120012320229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31938446 + ... + 32562314.

It is an arithmetic number, because the mean of its divisors is an integer number (887252941120).

Almost surely, 2^{20120012320220} is an apocalyptic number.

20120012320220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120012320220 is an abundant number, since it is smaller than the sum of its proper divisors (22468128853540).

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

20120012320220 is a wasteful number, since it uses less digits than its factorization.

20120012320220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636702 (or 636700 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20120012320220 its reverse (2202321002102), we get a palindrome (22322333322322).

The spelling of 20120012320220 in words is "twenty trillion, one hundred twenty billion, twelve million, three hundred twenty thousand, two hundred twenty".