2211330442 has 4 divisors (see below), whose sum is σ = 3316995666. Its totient is φ = 1105665220.

The previous prime is 2211330439. The next prime is 2211330463. The reversal of 2211330442 is 2440331122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2440331122 = 2 ⋅1220165561.

It can be written as a sum of positive squares in only one way, i.e., 2015022321 + 196308121 = 44889^2 + 14011^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552832609 + ... + 552832612.

Almost surely, 2^2211330442 is an apocalyptic number.

2211330442 is a deficient number, since it is larger than the sum of its proper divisors (1105665224).

2211330442 is a wasteful number, since it uses less digits than its factorization.

2211330442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105665223.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2211330442 is about 47024.7854008926. The cubic root of 2211330442 is about 1302.8203937953.

Adding to 2211330442 its reverse (2440331122), we get a palindrome (4651661564).

The spelling of 2211330442 in words is "two billion, two hundred eleven million, three hundred thirty thousand, four hundred forty-two".