2211110442 has 48 divisors (see below), whose sum is σ = 4835567880. Its totient is φ = 730169856.

The previous prime is 2211110431. The next prime is 2211110449. The reversal of 2211110442 is 2440111122.

2211110442 is a `hidden beast` number, since 2 + 211 + 1 + 10 + 442 = 666.

2211110442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2206274841 + 4835601 = 46971^2 + 2199^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2211110449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1154878 + ... + 1156790.

Almost surely, 2^2211110442 is an apocalyptic number.

2211110442 is an abundant number, since it is smaller than the sum of its proper divisors (2624457438).

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

2211110442 is a wasteful number, since it uses less digits than its factorization.

2211110442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487 (or 2484 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2211110442 is about 47022.4461507480. The cubic root of 2211110442 is about 1302.7771875296. Note that the first 3 decimals are identical.

Adding to 2211110442 its reverse (2440111122), we get a palindrome (4651221564).

The spelling of 2211110442 in words is "two billion, two hundred eleven million, one hundred ten thousand, four hundred forty-two".