11021212211 has 8 divisors (see below), whose sum is σ = 11222833248. Its totient is φ = 10820880000.

The previous prime is 11021212201. The next prime is 11021212247. The reversal of 11021212211 is 11221212011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021212211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021212201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304940 + ... + 339161.

It is an arithmetic number, because the mean of its divisors is an integer number (1402854156).

Almost surely, 2^11021212211 is an apocalyptic number.

11021212211 is a deficient number, since it is larger than the sum of its proper divisors (201621037).

11021212211 is an equidigital number, since it uses as much as digits as its factorization.

11021212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644413.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11021212211 its reverse (11221212011), we get a palindrome (22242424222).

The spelling of 11021212211 in words is "eleven billion, twenty-one million, two hundred twelve thousand, two hundred eleven".