2112261487 has 18 divisors (see below), whose sum is σ = 2504306168. Its totient is φ = 1745160144.

The previous prime is 2112261449. The next prime is 2112261491. The reversal of 2112261487 is 7841622112.

It is not a de Polignac number, because 2112261487 - 2¹⁵ = 2112228719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112261887) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3526014 + ... + 3526612.

Almost surely, 2^2112261487 is an apocalyptic number.

2112261487 is a deficient number, since it is larger than the sum of its proper divisors (392044681).

2112261487 is an frugal number, since it uses more digits than its factorization.

2112261487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263 (or 635 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 2112261487 is about 45959.3460245030. The cubic root of 2112261487 is about 1283.0666798466.

Adding to 2112261487 its reverse (7841622112), we get a palindrome (9953883599).

The spelling of 2112261487 in words is "two billion, one hundred twelve million, two hundred sixty-one thousand, four hundred eighty-seven".