2120101101220 has 24 divisors (see below), whose sum is σ = 4454080735104. Its totient is φ = 847684550496.

The previous prime is 2120101101161. The next prime is 2120101101233. The reversal of 2120101101220 is 221011010212.

It is a self number, because there is not a number n which added to its sum of digits gives 2120101101220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22194274 + ... + 22289593.

It is an arithmetic number, because the mean of its divisors is an integer number (185586697296).

Almost surely, 2^{2120101101220} is an apocalyptic number.

2120101101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120101101220 is an abundant number, since it is smaller than the sum of its proper divisors (2333979633884).

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

2120101101220 is a wasteful number, since it uses less digits than its factorization.

2120101101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44486259 (or 44486257 counting only the distinct ones).

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

Adding to 2120101101220 its reverse (221011010212), we get a palindrome (2341112111432).

The spelling of 2120101101220 in words is "two trillion, one hundred twenty billion, one hundred one million, one hundred one thousand, two hundred twenty".