2201021210 has 16 divisors (see below), whose sum is σ = 3965430600. Its totient is φ = 879610176.

The previous prime is 2201021209. The next prime is 2201021227. The reversal of 2201021210 is 121201022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1129833769 + 1071187441 = 33613^2 + 32729^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2201021191 and 2201021200.

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, 88145 + ... + 110324.

Almost surely, 2^2201021210 is an apocalyptic number.

2201021210 is a deficient number, since it is larger than the sum of its proper divisors (1764409390).

2201021210 is a wasteful number, since it uses less digits than its factorization.

2201021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199585.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2201021210 is about 46915.0424704060. The cubic root of 2201021210 is about 1300.7926546601.

Adding to 2201021210 its reverse (121201022), we get a palindrome (2322222232).

The spelling of 2201021210 in words is "two billion, two hundred one million, twenty-one thousand, two hundred ten".