11222120111 has 8 divisors (see below), whose sum is σ = 11856093120. Its totient is φ = 10604614048.

The previous prime is 11222120101. The next prime is 11222120131. The reversal of 11222120111 is 11102122211.

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

It is a cyclic number.

It is not a de Polignac number, because 11222120111 - 2⁶ = 11222120047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222120101) 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, 4115336 + ... + 4118061.

It is an arithmetic number, because the mean of its divisors is an integer number (1482011640).

Almost surely, 2^11222120111 is an apocalyptic number.

11222120111 is a deficient number, since it is larger than the sum of its proper divisors (633973009).

11222120111 is an equidigital number, since it uses as much as digits as its factorization.

11222120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8233473.

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

Adding to 11222120111 its reverse (11102122211), we get a palindrome (22324242322).

The spelling of 11222120111 in words is "eleven billion, two hundred twenty-two million, one hundred twenty thousand, one hundred eleven".