20011102210120 has 32 divisors (see below), whose sum is σ = 51457119969600. Its totient is φ = 6860949329088.

The previous prime is 20011102210091. The next prime is 20011102210171. The reversal of 20011102210120 is 2101220111002.

It is a self number, because there is not a number n which added to its sum of digits gives 20011102210120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35734110810 + ... + 35734111369.

It is an arithmetic number, because the mean of its divisors is an integer number (1608034999050).

Almost surely, 2^{20011102210120} is an apocalyptic number.

20011102210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011102210120 is an abundant number, since it is smaller than the sum of its proper divisors (31446017759480).

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

20011102210120 is a wasteful number, since it uses less digits than its factorization.

20011102210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71468222197 (or 71468222193 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20011102210120 its reverse (2101220111002), we get a palindrome (22112322321122).

The spelling of 20011102210120 in words is "twenty trillion, eleven billion, one hundred two million, two hundred ten thousand, one hundred twenty".