213221302 has 24 divisors (see below), whose sum is σ = 369424368. Its totient is φ = 90415200.

The previous prime is 213221251. The next prime is 213221377. The reversal of 213221302 is 203122312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142068 + ... + 143560.

It is an arithmetic number, because the mean of its divisors is an integer number (15392682).

Almost surely, 2^213221302 is an apocalyptic number.

213221302 is a deficient number, since it is larger than the sum of its proper divisors (156203066).

213221302 is a wasteful number, since it uses less digits than its factorization.

213221302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213221302 is about 14602.0992326446. The cubic root of 213221302 is about 597.4160191953.

Adding to 213221302 its reverse (203122312), we get a palindrome (416343614).

The spelling of 213221302 in words is "two hundred thirteen million, two hundred twenty-one thousand, three hundred two".