2212704021 has 16 divisors (see below), whose sum is σ = 3219568128. Its totient is φ = 1340578800.

The previous prime is 2212704001. The next prime is 2212704047. The reversal of 2212704021 is 1204072122.

2212704021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2212704021 - 2⁷ = 2212703893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212704001) 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, 105600 + ... + 124806.

It is an arithmetic number, because the mean of its divisors is an integer number (201223008).

Almost surely, 2^2212704021 is an apocalyptic number.

It is an amenable number.

2212704021 is a deficient number, since it is larger than the sum of its proper divisors (1006864107).

2212704021 is a wasteful number, since it uses less digits than its factorization.

2212704021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22712.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 2212704021 is about 47039.3879743349. The cubic root of 2212704021 is about 1303.0900891038.

Adding to 2212704021 its reverse (1204072122), we get a palindrome (3416776143).

The spelling of 2212704021 in words is "two billion, two hundred twelve million, seven hundred four thousand, twenty-one".