2111521134 has 16 divisors (see below), whose sum is σ = 4224874320. Its totient is φ = 703535040.

The previous prime is 2111521109. The next prime is 2111521157. The reversal of 2111521134 is 4311251112.

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 2111521134.

It is a congruent number.

It is an unprimeable number.

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, 61119 + ... + 89210.

It is an arithmetic number, because the mean of its divisors is an integer number (264054645).

Almost surely, 2^2111521134 is an apocalyptic number.

2111521134 is an abundant number, since it is smaller than the sum of its proper divisors (2113353186).

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

2111521134 is a wasteful number, since it uses less digits than its factorization.

2111521134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152675.

The product of its digits is 240, while the sum is 21.

The square root of 2111521134 is about 45951.2908850230. The cubic root of 2111521134 is about 1282.9167562890.

Adding to 2111521134 its reverse (4311251112), we get a palindrome (6422772246).

The spelling of 2111521134 in words is "two billion, one hundred eleven million, five hundred twenty-one thousand, one hundred thirty-four".