11001221101120 has 56 divisors (see below), whose sum is σ = 26197461244800. Its totient is φ = 4400353469952.

The previous prime is 11001221101109. The next prime is 11001221101201. The reversal of 11001221101120 is 2110112210011.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11001221101120.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10266891 + ... + 11287669.

Almost surely, 2^{11001221101120} is an apocalyptic number.

11001221101120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001221101120 is an abundant number, since it is smaller than the sum of its proper divisors (15196240143680).

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

11001221101120 is a wasteful number, since it uses less digits than its factorization.

11001221101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054475 (or 1054465 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11001221101120 its reverse (2110112210011), we get a palindrome (13111333311131).

The spelling of 11001221101120 in words is "eleven trillion, one billion, two hundred twenty-one million, one hundred one thousand, one hundred twenty".