11210212221 has 16 divisors (see below), whose sum is σ = 16125337536. Its totient is φ = 6886325376.

The previous prime is 11210212217. The next prime is 11210212241. The reversal of 11210212221 is 12221201211.

It is not a de Polignac number, because 11210212221 - 2² = 11210212217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11210212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210212241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233320 + ... + 277233.

It is an arithmetic number, because the mean of its divisors is an integer number (1007833596).

Almost surely, 2^11210212221 is an apocalyptic number.

It is an amenable number.

11210212221 is a deficient number, since it is larger than the sum of its proper divisors (4915125315).

11210212221 is a wasteful number, since it uses less digits than its factorization.

11210212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511132.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11210212221 its reverse (12221201211), we get a palindrome (23431413432).

The spelling of 11210212221 in words is "eleven billion, two hundred ten million, two hundred twelve thousand, two hundred twenty-one".