11011221200120 has 16 divisors (see below), whose sum is σ = 24775247700360. Its totient is φ = 4404488480032.

The previous prime is 11011221200099. The next prime is 11011221200137. The reversal of 11011221200120 is 2100212211011.

It is a junction number, because it is equal to n+sod(n) for n = 11011221200095 and 11011221200104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137640264962 + ... + 137640265041.

Almost surely, 2^{11011221200120} is an apocalyptic number.

11011221200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011221200120 is an abundant number, since it is smaller than the sum of its proper divisors (13764026500240).

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

11011221200120 is a wasteful number, since it uses less digits than its factorization.

11011221200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275280530014 (or 275280530010 counting only the distinct ones).

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

Adding to 11011221200120 its reverse (2100212211011), we get a palindrome (13111433411131).

The spelling of 11011221200120 in words is "eleven trillion, eleven billion, two hundred twenty-one million, two hundred thousand, one hundred twenty".