213222111210 has 64 divisors (see below), whose sum is σ = 602038915200. Its totient is φ = 53514567936.

The previous prime is 213222111199. The next prime is 213222111283. The reversal of 213222111210 is 12111222312.

213222111210 is a `hidden beast` number, since 21 + 322 + 2 + 111 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23222220 + ... + 23231399.

It is an arithmetic number, because the mean of its divisors is an integer number (9406858050).

Almost surely, 2^213222111210 is an apocalyptic number.

213222111210 is an abundant number, since it is smaller than the sum of its proper divisors (388816803990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213222111210 is a wasteful number, since it uses less digits than its factorization.

213222111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46453652 (or 46453646 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 213222111210 its reverse (12111222312), we get a palindrome (225333333522).

The spelling of 213222111210 in words is "two hundred thirteen billion, two hundred twenty-two million, one hundred eleven thousand, two hundred ten".