2112412521 has 16 divisors (see below), whose sum is σ = 2868744960. Its totient is φ = 1382384640.

The previous prime is 2112412487. The next prime is 2112412543. The reversal of 2112412521 is 1252142112.

It is not a de Polignac number, because 2112412521 - 2¹⁷ = 2112281449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2112412021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15241 + ... + 66761.

It is an arithmetic number, because the mean of its divisors is an integer number (179296560).

Almost surely, 2^2112412521 is an apocalyptic number.

It is an amenable number.

2112412521 is a deficient number, since it is larger than the sum of its proper divisors (756332439).

2112412521 is a wasteful number, since it uses less digits than its factorization.

2112412521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51776.

The product of its digits is 320, while the sum is 21.

The square root of 2112412521 is about 45960.9891212102. The cubic root of 2112412521 is about 1283.0972603525.

Adding to 2112412521 its reverse (1252142112), we get a palindrome (3364554633).

The spelling of 2112412521 in words is "two billion, one hundred twelve million, four hundred twelve thousand, five hundred twenty-one".