11001222221112 has 128 divisors (see below), whose sum is σ = 32851728000000. Its totient is φ = 3400153728768.

The previous prime is 11001222221057. The next prime is 11001222221117. The reversal of 11001222221112 is 21112222210011.

11001222221112 is a `hidden beast` number, since 110 + 0 + 1 + 222 + 221 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001222221117) 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, 28324237 + ... + 28710012.

It is an arithmetic number, because the mean of its divisors is an integer number (256654125000).

Almost surely, 2^{11001222221112} is an apocalyptic number.

11001222221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11001222221112 is an abundant number, since it is smaller than the sum of its proper divisors (21850505778888).

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

11001222221112 is a wasteful number, since it uses less digits than its factorization.

11001222221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57034330 (or 57034320 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11001222221112 its reverse (21112222210011), we get a palindrome (32113444431123).

The spelling of 11001222221112 in words is "eleven trillion, one billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".