2211252688 has 20 divisors (see below), whose sum is σ = 4286056900. Its totient is φ = 1105173504.

The previous prime is 2211252677. The next prime is 2211252707. The reversal of 2211252688 is 8862521122.

It can be written as a sum of positive squares in 2 ways, for example, as 1716279184 + 494973504 = 41428^2 + 22248^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13888 + ... + 67936.

It is an arithmetic number, because the mean of its divisors is an integer number (214302845).

Almost surely, 2^2211252688 is an apocalyptic number.

It is an amenable number.

2211252688 is a deficient number, since it is larger than the sum of its proper divisors (2074804212).

2211252688 is a wasteful number, since it uses less digits than its factorization.

2211252688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56614 (or 56608 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 2211252688 is about 47023.9586593898. The cubic root of 2211252688 is about 1302.8051238501.

The spelling of 2211252688 in words is "two billion, two hundred eleven million, two hundred fifty-two thousand, six hundred eighty-eight".