212313032302221 has 40 divisors (see below), whose sum is σ = 320743910999160. Its totient is φ = 139942344148992.

The previous prime is 212313032302141. The next prime is 212313032302307. The reversal of 212313032302221 is 122203230313212.

212313032302221 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 130 + 3 + 2 + 302 + 221 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 75174622308900 + 137138409993321 = 8670330^2 + 11710611^2 .

It is not a de Polignac number, because 212313032302221 - 2¹³ = 212313032294029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212313032302121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 108149815 + ... + 110095451.

It is an arithmetic number, because the mean of its divisors is an integer number (8018597774979).

Almost surely, 2^{212313032302221} is an apocalyptic number.

It is an amenable number.

212313032302221 is a deficient number, since it is larger than the sum of its proper divisors (108430878696939).

212313032302221 is a wasteful number, since it uses less digits than its factorization.

212313032302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960875 (or 1960866 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 212313032302221 its reverse (122203230313212), we get a palindrome (334516262615433).

The spelling of 212313032302221 in words is "two hundred twelve trillion, three hundred thirteen billion, thirty-two million, three hundred two thousand, two hundred twenty-one".