1011201221120 has 80 divisors (see below), whose sum is σ = 2458661439168. Its totient is φ = 398783508480.

The previous prime is 1011201221089. The next prime is 1011201221171. The reversal of 1011201221120 is 211221021101.

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

It is a junction number, because it is equal to n+sod(n) for n = 1011201221095 and 1011201221104.

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, 2599934 + ... + 2963453.

Almost surely, 2^{1011201221120} is an apocalyptic number.

1011201221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011201221120 is an abundant number, since it is smaller than the sum of its proper divisors (1447460218048).

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

1011201221120 is an frugal number, since it uses more digits than its factorization.

1011201221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563481 (or 5563465 counting only the distinct ones).

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

Adding to 1011201221120 its reverse (211221021101), we get a palindrome (1222422242221).

It can be divided in two parts, 1011201 and 221120, that added together give a palindrome (1232321).

The spelling of 1011201221120 in words is "one trillion, eleven billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty".