2211999228 has 36 divisors (see below), whose sum is σ = 5885730760. Its totient is φ = 698525856.

The previous prime is 2211999197. The next prime is 2211999281. The reversal of 2211999228 is 8229991122.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1616275 + ... + 1617642.

Almost surely, 2^2211999228 is an apocalyptic number.

It is an amenable number.

2211999228 is an abundant number, since it is smaller than the sum of its proper divisors (3673731532).

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

2211999228 is a wasteful number, since it uses less digits than its factorization.

2211999228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233946 (or 3233941 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 2211999228 is about 47031.8958580238. The cubic root of 2211999228 is about 1302.9517204995.

The spelling of 2211999228 in words is "two billion, two hundred eleven million, nine hundred ninety-nine thousand, two hundred twenty-eight".