2211121120 has 48 divisors (see below), whose sum is σ = 5625607680. Its totient is φ = 816413184.

The previous prime is 2211121109. The next prime is 2211121127. The reversal of 2211121120 is 211211122.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 2211121120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211121127) 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, 529440 + ... + 533599.

It is an arithmetic number, because the mean of its divisors is an integer number (117200160).

Almost surely, 2^2211121120 is an apocalyptic number.

2211121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211121120 is an abundant number, since it is smaller than the sum of its proper divisors (3414486560).

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

2211121120 is a wasteful number, since it uses less digits than its factorization.

2211121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063067 (or 1063059 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2211121120 is about 47022.5596921308. The cubic root of 2211121120 is about 1302.7792846708.

Adding to 2211121120 its reverse (211211122), we get a palindrome (2422332242).

The spelling of 2211121120 in words is "two billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty".