20120102200220 has 96 divisors (see below), whose sum is σ = 48964421721600. Its totient is φ = 6867736761600.

The previous prime is 20120102200153. The next prime is 20120102200223. The reversal of 20120102200220 is 2200220102102.

It is a junction number, because it is equal to n+sod(n) for n = 20120102200195 and 20120102200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120102200223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21624296 + ... + 22535535.

It is an arithmetic number, because the mean of its divisors is an integer number (510046059600).

Almost surely, 2^{20120102200220} is an apocalyptic number.

20120102200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120102200220 is an abundant number, since it is smaller than the sum of its proper divisors (28844319521380).

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

20120102200220 is a wasteful number, since it uses less digits than its factorization.

20120102200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44159979 (or 44159977 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20120102200220 its reverse (2200220102102), we get a palindrome (22320322302322).

The spelling of 20120102200220 in words is "twenty trillion, one hundred twenty billion, one hundred two million, two hundred thousand, two hundred twenty".