2101120442 has 16 divisors (see below), whose sum is σ = 3174205320. Its totient is φ = 1043074368.

The previous prime is 2101120433. The next prime is 2101120447. The reversal of 2101120442 is 2440211012.

It can be written as a sum of positive squares in 4 ways, for example, as 1988357281 + 112763161 = 44591^2 + 10619^2 .

It is a super-2 number, since 2×2101120442² = 8829414223580550728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2101120442.

It is not an unprimeable number, because it can be changed into a prime (2101120447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195308 + ... + 205784.

Almost surely, 2^2101120442 is an apocalyptic number.

2101120442 is a deficient number, since it is larger than the sum of its proper divisors (1073084878).

2101120442 is a wasteful number, since it uses less digits than its factorization.

2101120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11185.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2101120442 is about 45837.9803438153. The cubic root of 2101120442 is about 1280.8068728569.

Adding to 2101120442 its reverse (2440211012), we get a palindrome (4541331454).

The spelling of 2101120442 in words is "two billion, one hundred one million, one hundred twenty thousand, four hundred forty-two".