2212721288 has 12 divisors (see below), whose sum is σ = 4149101895. Its totient is φ = 1106294120.

The previous prime is 2212721243. The next prime is 2212721339. The reversal of 2212721288 is 8821272122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1106360644 + 1106360644 = 33262^2 + 33262^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33262.

It is a super-2 number, since 2×2212721288² = 9792270996736757888, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 124733 + ... + 141363.

Almost surely, 2^2212721288 is an apocalyptic number.

It is an amenable number.

2212721288 is a deficient number, since it is larger than the sum of its proper divisors (1936380607).

2212721288 is an frugal number, since it uses more digits than its factorization.

2212721288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33268 (or 16633 counting only the distinct ones).

The product of its digits is 14336, while the sum is 35.

The square root of 2212721288 is about 47039.5715116539. The cubic root of 2212721288 is about 1303.0934786817.

The spelling of 2212721288 in words is "two billion, two hundred twelve million, seven hundred twenty-one thousand, two hundred eighty-eight".