2126261272 has 16 divisors (see below), whose sum is σ = 4196568600. Its totient is φ = 1007176320.

The previous prime is 2126261251. The next prime is 2126261279. The reversal of 2126261272 is 2721626212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126261279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6994129 + ... + 6994432.

Almost surely, 2^2126261272 is an apocalyptic number.

It is an amenable number.

2126261272 is a deficient number, since it is larger than the sum of its proper divisors (2070307328).

2126261272 is a wasteful number, since it uses less digits than its factorization.

2126261272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13988586 (or 13988582 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 2126261272 is about 46111.4006727187. The cubic root of 2126261272 is about 1285.8951046666.

Adding to 2126261272 its reverse (2721626212), we get a palindrome (4847887484).

The spelling of 2126261272 in words is "two billion, one hundred twenty-six million, two hundred sixty-one thousand, two hundred seventy-two".