210202213 has 4 divisors (see below), whose sum is σ = 226371628. Its totient is φ = 194032800.

The previous prime is 210202211. The next prime is 210202219. The reversal of 210202213 is 312202012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29084449 + 181117764 = 5393^2 + 13458^2 .

It is not a de Polignac number, because 210202213 - 2¹ = 210202211 is a prime.

It is a super-3 number, since 3×210202213³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 16169401 = 210202213 / (2 + 1 + 0 + 2 + 0 + 2 + 2 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210202193 and 210202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210202211) 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, 8084688 + ... + 8084713.

It is an arithmetic number, because the mean of its divisors is an integer number (56592907).

Almost surely, 2^210202213 is an apocalyptic number.

It is an amenable number.

210202213 is a deficient number, since it is larger than the sum of its proper divisors (16169415).

210202213 is a wasteful number, since it uses less digits than its factorization.

210202213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16169414.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 210202213 is about 14498.3520787709. The cubic root of 210202213 is about 594.5829179281.

Adding to 210202213 its reverse (312202012), we get a palindrome (522404225).

The spelling of 210202213 in words is "two hundred ten million, two hundred two thousand, two hundred thirteen".