2211210220120 has 128 divisors (see below), whose sum is σ = 5734134374400. Its totient is φ = 759831385600.

The previous prime is 2211210220081. The next prime is 2211210220139. The reversal of 2211210220120 is 210220121122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2211210220094 and 2211210220103.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1243816 + ... + 2443255.

It is an arithmetic number, because the mean of its divisors is an integer number (44797924800).

Almost surely, 2^{2211210220120} is an apocalyptic number.

2211210220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211210220120 is an abundant number, since it is smaller than the sum of its proper divisors (3522924154280).

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

2211210220120 is a wasteful number, since it uses less digits than its factorization.

2211210220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687169 (or 3687165 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211210220120 its reverse (210220121122), we get a palindrome (2421430341242).

The spelling of 2211210220120 in words is "two trillion, two hundred eleven billion, two hundred ten million, two hundred twenty thousand, one hundred twenty".