20120112103220 has 12 divisors (see below), whose sum is σ = 42252235416804. Its totient is φ = 8048044841280.

The previous prime is 20120112103219. The next prime is 20120112103249. The reversal of 20120112103220 is 2230121102102.

It can be written as a sum of positive squares in 2 ways, for example, as 8266441520164 + 11853670583056 = 2875142^2 + 3442916^2 .

It is a super-2 number, since 2×20120112103220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503002802561 + ... + 503002802600.

It is an arithmetic number, because the mean of its divisors is an integer number (3521019618067).

Almost surely, 2^{20120112103220} is an apocalyptic number.

20120112103220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120112103220 is an abundant number, since it is smaller than the sum of its proper divisors (22132123313584).

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

20120112103220 is a wasteful number, since it uses less digits than its factorization.

20120112103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006005605170 (or 1006005605168 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20120112103220 its reverse (2230121102102), we get a palindrome (22350233205322).

The spelling of 20120112103220 in words is "twenty trillion, one hundred twenty billion, one hundred twelve million, one hundred three thousand, two hundred twenty".