2211032231220 has 192 divisors, whose sum is σ = 6568724574720. Its totient is φ = 554494617600.

The previous prime is 2211032231053. The next prime is 2211032231231. The reversal of 2211032231220 is 221322301122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 291343186 + ... + 291350774.

It is an arithmetic number, because the mean of its divisors is an integer number (34212107160).

Almost surely, 2^{2211032231220} is an apocalyptic number.

2211032231220 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 2211032231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3284362287360).

2211032231220 is an abundant number, since it is smaller than the sum of its proper divisors (4357692343500).

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

2211032231220 is a wasteful number, since it uses less digits than its factorization.

2211032231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11146 (or 11144 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2211032231220 its reverse (221322301122), we get a palindrome (2432354532342).

The spelling of 2211032231220 in words is "two trillion, two hundred eleven billion, thirty-two million, two hundred thirty-one thousand, two hundred twenty".