210222490 has 8 divisors (see below), whose sum is σ = 378400500. Its totient is φ = 84088992.

The previous prime is 210222473. The next prime is 210222491. The reversal of 210222490 is 94222012.

It can be written as a sum of positive squares in 2 ways, for example, as 182439049 + 27783441 = 13507^2 + 5271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (210222491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10511115 + ... + 10511134.

Almost surely, 2^210222490 is an apocalyptic number.

210222490 is a deficient number, since it is larger than the sum of its proper divisors (168178010).

210222490 is a wasteful number, since it uses less digits than its factorization.

210222490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21022256.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 210222490 is about 14499.0513482779. The cubic root of 210222490 is about 594.6020359796.

The spelling of 210222490 in words is "two hundred ten million, two hundred twenty-two thousand, four hundred ninety".