2111522364 has 384 divisors, whose sum is σ = 7047936000. Its totient is φ = 532998144.

The previous prime is 2111522363. The next prime is 2111522377. The reversal of 2111522364 is 4632251112.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111522363) 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 127 ways as a sum of consecutive naturals, for example, 15412504 + ... + 15412640.

It is an arithmetic number, because the mean of its divisors is an integer number (18354000).

Almost surely, 2^2111522364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111522364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3523968000).

2111522364 is an abundant number, since it is smaller than the sum of its proper divisors (4936413636).

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

2111522364 is a wasteful number, since it uses less digits than its factorization.

2111522364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 234 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2111522364 is about 45951.3042687582. The cubic root of 2111522364 is about 1282.9170053965.

Adding to 2111522364 its reverse (4632251112), we get a palindrome (6743773476).

The spelling of 2111522364 in words is "two billion, one hundred eleven million, five hundred twenty-two thousand, three hundred sixty-four".