2101222242 has 128 divisors (see below), whose sum is σ = 5460019200. Its totient is φ = 586605888.

The previous prime is 2101222199. The next prime is 2101222261. The reversal of 2101222242 is 2422221012.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4127884 + ... + 4128392.

It is an arithmetic number, because the mean of its divisors is an integer number (42656400).

Almost surely, 2^2101222242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101222242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2730009600).

2101222242 is an abundant number, since it is smaller than the sum of its proper divisors (3358796958).

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

2101222242 is a wasteful number, since it uses less digits than its factorization.

2101222242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2101222242 is about 45839.0907632339. The cubic root of 2101222242 is about 1280.8275576991.

Adding to 2101222242 its reverse (2422221012), we get a palindrome (4523443254).

The spelling of 2101222242 in words is "two billion, one hundred one million, two hundred twenty-two thousand, two hundred forty-two".