11210221222111 has 4 divisors (see below), whose sum is σ = 11800232865400. Its totient is φ = 10620209578824.

The previous prime is 11210221222043. The next prime is 11210221222183. The reversal of 11210221222111 is 11122212201211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11210221222111 - 2¹⁷ = 11210221091039 is a prime.

It is a super-3 number, since 3×11210221222111³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 590011643269 = 11210221222111 / (1 + 1 + 2 + 1 + 0 + 2 + 2 + 1 + 2 + 2 + 2 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210221222511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295005821616 + ... + 295005821653.

It is an arithmetic number, because the mean of its divisors is an integer number (2950058216350).

Almost surely, 2^{11210221222111} is an apocalyptic number.

11210221222111 is a deficient number, since it is larger than the sum of its proper divisors (590011643289).

11210221222111 is an equidigital number, since it uses as much as digits as its factorization.

11210221222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590011643288.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11210221222111 its reverse (11122212201211), we get a palindrome (22332433423322).

The spelling of 11210221222111 in words is "eleven trillion, two hundred ten billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred eleven".