2211021112220 has 24 divisors (see below), whose sum is σ = 4645032663600. Its totient is φ = 884048763392.

The previous prime is 2211021112213. The next prime is 2211021112229. The reversal of 2211021112220 is 222111201122.

It is a super-2 number, since 2×2211021112220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211021112229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22429685 + ... + 22528044.

It is an arithmetic number, because the mean of its divisors is an integer number (193543027650).

Almost surely, 2^{2211021112220} is an apocalyptic number.

2211021112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211021112220 is an abundant number, since it is smaller than the sum of its proper divisors (2434011551380).

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

2211021112220 is a wasteful number, since it uses less digits than its factorization.

2211021112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44960197 (or 44960195 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2211021112220 its reverse (222111201122), we get a palindrome (2433132313342).

The spelling of 2211021112220 in words is "two trillion, two hundred eleven billion, twenty-one million, one hundred twelve thousand, two hundred twenty".