11011221211120 has 80 divisors (see below), whose sum is σ = 29021477819040. Its totient is φ = 3851698424832.

The previous prime is 11011221211091. The next prime is 11011221211157. The reversal of 11011221211120 is 2111212211011.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×11011221211120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 11011221211094 and 11011221211103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278604259 + ... + 278643778.

It is an arithmetic number, because the mean of its divisors is an integer number (362768472738).

Almost surely, 2^{11011221211120} is an apocalyptic number.

11011221211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011221211120 is an abundant number, since it is smaller than the sum of its proper divisors (18010256607920).

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

11011221211120 is a wasteful number, since it uses less digits than its factorization.

11011221211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557248082 (or 557248076 counting only the distinct ones).

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

Adding to 11011221211120 its reverse (2111212211011), we get a palindrome (13122433422131).

The spelling of 11011221211120 in words is "eleven trillion, eleven billion, two hundred twenty-one million, two hundred eleven thousand, one hundred twenty".