2211111111120 has 160 divisors (see below), whose sum is σ = 7040602622592. Its totient is φ = 573620115456.

The previous prime is 2211111111101. The next prime is 2211111111179. The reversal of 2211111111120 is 211111111122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2211111111120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120075034 + ... + 120093446.

Almost surely, 2^{2211111111120} is an apocalyptic number.

2211111111120 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 2211111111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3520301311296).

2211111111120 is an abundant number, since it is smaller than the sum of its proper divisors (4829491511472).

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

2211111111120 is a wasteful number, since it uses less digits than its factorization.

2211111111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31989 (or 31983 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 2211111111120 its reverse (211111111122), we get a palindrome (2422222222242).

The spelling of 2211111111120 in words is "two trillion, two hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty".