2121526260 has 144 divisors (see below), whose sum is σ = 7525854336. Its totient is φ = 473630976.

The previous prime is 2121526223. The next prime is 2121526283. The reversal of 2121526260 is 626251212.

2121526260 is a `hidden beast` number, since 21 + 2 + 15 + 2 + 626 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34602 + ... + 73758.

Almost surely, 2^2121526260 is an apocalyptic number.

2121526260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121526260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3762927168).

2121526260 is an abundant number, since it is smaller than the sum of its proper divisors (5404328076).

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

2121526260 is a wasteful number, since it uses less digits than its factorization.

2121526260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39222 (or 39217 counting only the distinct ones).

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

The square root of 2121526260 is about 46060.0288753709. The cubic root of 2121526260 is about 1284.9398670806.

Adding to 2121526260 its reverse (626251212), we get a palindrome (2747777472).

The spelling of 2121526260 in words is "two billion, one hundred twenty-one million, five hundred twenty-six thousand, two hundred sixty".