210401213 has 12 divisors (see below), whose sum is σ = 231651420. Its totient is φ = 190956480.

The previous prime is 210401209. The next prime is 210401221. The reversal of 210401213 is 312104012.

It can be written as a sum of positive squares in 2 ways, for example, as 203547289 + 6853924 = 14267^2 + 2618^2 .

It is not a de Polignac number, because 210401213 - 2² = 210401209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210401273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102683 + ... + 104711.

It is an arithmetic number, because the mean of its divisors is an integer number (19304285).

Almost surely, 2^210401213 is an apocalyptic number.

It is an amenable number.

210401213 is a deficient number, since it is larger than the sum of its proper divisors (21250207).

210401213 is a wasteful number, since it uses less digits than its factorization.

210401213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908 (or 2897 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 210401213 is about 14505.2133041883. The cubic root of 210401213 is about 594.7704907734.

Adding to 210401213 its reverse (312104012), we get a palindrome (522505225).

The spelling of 210401213 in words is "two hundred ten million, four hundred one thousand, two hundred thirteen".