11221011111112 has 128 divisors (see below), whose sum is σ = 23765363193600. Its totient is φ = 4922496000000.

The previous prime is 11221011111083. The next prime is 11221011111119. The reversal of 11221011111112 is 21111111012211.

It is a super-2 number, since 2×11221011111112² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221011111119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437641189 + ... + 437666827.

It is an arithmetic number, because the mean of its divisors is an integer number (185666899950).

Almost surely, 2^{11221011111112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221011111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11882681596800).

11221011111112 is an abundant number, since it is smaller than the sum of its proper divisors (12544352082488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221011111112 is a wasteful number, since it uses less digits than its factorization.

11221011111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26999 (or 26995 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11221011111112 its reverse (21111111012211), we get a palindrome (32332122123323).

The spelling of 11221011111112 in words is "eleven trillion, two hundred twenty-one billion, eleven million, one hundred eleven thousand, one hundred twelve".