2211749880 has 32 divisors (see below), whose sum is σ = 6635250000. Its totient is φ = 589799936.

The previous prime is 2211749867. The next prime is 2211749909. The reversal of 2211749880 is 889471122.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9215505 + ... + 9215744.

Almost surely, 2^2211749880 is an apocalyptic number.

2211749880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211749880 is an abundant number, since it is smaller than the sum of its proper divisors (4423500120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211749880 is a wasteful number, since it uses less digits than its factorization.

2211749880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18431263 (or 18431259 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 2211749880 is about 47029.2449439708. The cubic root of 2211749880 is about 1302.9027601729.

The spelling of 2211749880 in words is "two billion, two hundred eleven million, seven hundred forty-nine thousand, eight hundred eighty".