2120111220220 has 48 divisors (see below), whose sum is σ = 5089988675520. Its totient is φ = 726649311744.

The previous prime is 2120111220217. The next prime is 2120111220229. The reversal of 2120111220220 is 220221110212.

It is a happy number.

It is a super-2 number, since 2×2120111220220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120111220194 and 2120111220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120111220229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2146665 + ... + 2974624.

It is an arithmetic number, because the mean of its divisors is an integer number (106041430740).

Almost surely, 2^{2120111220220} is an apocalyptic number.

2120111220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120111220220 is an abundant number, since it is smaller than the sum of its proper divisors (2969877455300).

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

2120111220220 is a wasteful number, since it uses less digits than its factorization.

2120111220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124262 (or 5124260 counting only the distinct ones).

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

Adding to 2120111220220 its reverse (220221110212), we get a palindrome (2340332330432).

The spelling of 2120111220220 in words is "two trillion, one hundred twenty billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty".