2111245530 has 64 divisors (see below), whose sum is σ = 5383463040. Its totient is φ = 528885504.

The previous prime is 2111245529. The next prime is 2111245537. The reversal of 2111245530 is 355421112.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2111245530.

It is not an unprimeable number, because it can be changed into a prime (2111245537) 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 31 ways as a sum of consecutive naturals, for example, 604 + ... + 64983.

It is an arithmetic number, because the mean of its divisors is an integer number (84116610).

Almost surely, 2^2111245530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111245530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2691731520).

2111245530 is an abundant number, since it is smaller than the sum of its proper divisors (3272217510).

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

2111245530 is a wasteful number, since it uses less digits than its factorization.

2111245530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65663.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2111245530 is about 45948.2919160223. The cubic root of 2111245530 is about 1282.8609367554.

Adding to 2111245530 its reverse (355421112), we get a palindrome (2466666642).

The spelling of 2111245530 in words is "two billion, one hundred eleven million, two hundred forty-five thousand, five hundred thirty".