213020101 has 6 divisors (see below), whose sum is σ = 247798950. Its totient is φ = 182588616.

The previous prime is 213020069. The next prime is 213020161. The reversal of 213020101 is 101020312.

It can be written as a sum of positive squares in only one way, i.e., 143280900 + 69739201 = 11970^2 + 8351^2 .

It is not a de Polignac number, because 213020101 - 2⁵ = 213020069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2173626 + ... + 2173723.

It is an arithmetic number, because the mean of its divisors is an integer number (41299825).

Almost surely, 2^213020101 is an apocalyptic number.

It is an amenable number.

213020101 is a deficient number, since it is larger than the sum of its proper divisors (34778849).

213020101 is an equidigital number, since it uses as much as digits as its factorization.

213020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347363 (or 4347356 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 213020101 is about 14595.2081519929. The cubic root of 213020101 is about 597.2280477820.

Adding to 213020101 its reverse (101020312), we get a palindrome (314040413).

The spelling of 213020101 in words is "two hundred thirteen million, twenty thousand, one hundred one".