2211020211220 has 96 divisors (see below), whose sum is σ = 4912629636096. Its totient is φ = 834755328000.

The previous prime is 2211020211217. The next prime is 2211020211223. The reversal of 2211020211220 is 221120201122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2211020211217) and next prime (2211020211223).

It is a super-2 number, since 2×2211020211220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211020211194 and 2211020211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211020211223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3932044 + ... + 4459036.

It is an arithmetic number, because the mean of its divisors is an integer number (51173225376).

Almost surely, 2^{2211020211220} is an apocalyptic number.

2211020211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211020211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2456314818048).

2211020211220 is an abundant number, since it is smaller than the sum of its proper divisors (2701609424876).

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

2211020211220 is a wasteful number, since it uses less digits than its factorization.

2211020211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527201 (or 527199 counting only the distinct ones).

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

Adding to 2211020211220 its reverse (221120201122), we get a palindrome (2432140412342).

The spelling of 2211020211220 in words is "two trillion, two hundred eleven billion, twenty million, two hundred eleven thousand, two hundred twenty".