7211126289 has 16 divisors (see below), whose sum is σ = 9988078464. Its totient is φ = 4624099200.

The previous prime is 7211126281. The next prime is 7211126323. The reversal of 7211126289 is 9826211127.

It is not a de Polignac number, because 7211126289 - 2³ = 7211126281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7211126281) 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, 404134 + ... + 421599.

It is an arithmetic number, because the mean of its divisors is an integer number (624254904).

Almost surely, 2^7211126289 is an apocalyptic number.

It is an amenable number.

7211126289 is a deficient number, since it is larger than the sum of its proper divisors (2776952175).

7211126289 is a wasteful number, since it uses less digits than its factorization.

7211126289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825848.

The product of its digits is 24192, while the sum is 39.

The square root of 7211126289 is about 84918.3507199710. The cubic root of 7211126289 is about 1931.9729159923.

The spelling of 7211126289 in words is "seven billion, two hundred eleven million, one hundred twenty-six thousand, two hundred eighty-nine".