213722116 has 12 divisors (see below), whose sum is σ = 377645632. Its totient is φ = 105823368.

The previous prime is 213722099. The next prime is 213722123. The reversal of 213722116 is 611227312.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258960 + ... + 259783.

Almost surely, 2^213722116 is an apocalyptic number.

It is an amenable number.

213722116 is a deficient number, since it is larger than the sum of its proper divisors (163923516).

213722116 is a wasteful number, since it uses less digits than its factorization.

213722116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518850 (or 518848 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 213722116 is about 14619.2378734324. The cubic root of 213722116 is about 597.8833901998.

Adding to 213722116 its reverse (611227312), we get a palindrome (824949428).

The spelling of 213722116 in words is "two hundred thirteen million, seven hundred twenty-two thousand, one hundred sixteen".