11221022111 has 8 divisors (see below), whose sum is σ = 12117843360. Its totient is φ = 10329010272.

The previous prime is 11221022107. The next prime is 11221022117. The reversal of 11221022111 is 11122012211.

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 11221022111 - 2² = 11221022107 is a prime.

It is a super-2 number, since 2×11221022111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221022117) 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, 1197500 + ... + 1206833.

It is an arithmetic number, because the mean of its divisors is an integer number (1514730420).

Almost surely, 2^11221022111 is an apocalyptic number.

11221022111 is a deficient number, since it is larger than the sum of its proper divisors (896821249).

11221022111 is a wasteful number, since it uses less digits than its factorization.

11221022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404705.

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

Adding to 11221022111 its reverse (11122012211), we get a palindrome (22343034322).

The spelling of 11221022111 in words is "eleven billion, two hundred twenty-one million, twenty-two thousand, one hundred eleven".