213121013302 has 16 divisors (see below), whose sum is σ = 320093834112. Its totient is φ = 106423130880.

The previous prime is 213121013291. The next prime is 213121013309. The reversal of 213121013302 is 203310121312.

It is a self number, because there is not a number n which added to its sum of digits gives 213121013302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121013309) 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, 8178598 + ... + 8204614.

It is an arithmetic number, because the mean of its divisors is an integer number (20005864632).

Almost surely, 2^213121013302 is an apocalyptic number.

213121013302 is a deficient number, since it is larger than the sum of its proper divisors (106972820810).

213121013302 is a wasteful number, since it uses less digits than its factorization.

213121013302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31143.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213121013302 its reverse (203310121312), we get a palindrome (416431134614).

The spelling of 213121013302 in words is "two hundred thirteen billion, one hundred twenty-one million, thirteen thousand, three hundred two".