213010002221 has 8 divisors (see below), whose sum is σ = 214238412024. Its totient is φ = 211782159360.

The previous prime is 213010002203. The next prime is 213010002277. The reversal of 213010002221 is 122200010312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 75068328196 + 137941674025 = 273986^2 + 371405^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 213010002221 - 2⁶ = 213010002157 is a prime.

It is a super-2 number, since 2×213010002221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213010002196 and 213010002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213010002521) 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 7 ways as a sum of consecutive naturals, for example, 623741 + ... + 902813.

It is an arithmetic number, because the mean of its divisors is an integer number (26779801503).

Almost surely, 2^213010002221 is an apocalyptic number.

It is an amenable number.

213010002221 is a deficient number, since it is larger than the sum of its proper divisors (1228409803).

213010002221 is a wasteful number, since it uses less digits than its factorization.

213010002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283471.

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

Adding to 213010002221 its reverse (122200010312), we get a palindrome (335210012533).

The spelling of 213010002221 in words is "two hundred thirteen billion, ten million, two thousand, two hundred twenty-one".