1101221200120 has 32 divisors (see below), whose sum is σ = 2557675048320. Its totient is φ = 426279173760.

The previous prime is 1101221200081. The next prime is 1101221200267. The reversal of 1101221200120 is 210021221011.

It is a self number, because there is not a number n which added to its sum of digits gives 1101221200120.

It is a congruent number.

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, 444039567 + ... + 444042046.

It is an arithmetic number, because the mean of its divisors is an integer number (79927345260).

Almost surely, 2^{1101221200120} is an apocalyptic number.

1101221200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101221200120 is an abundant number, since it is smaller than the sum of its proper divisors (1456453848200).

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

1101221200120 is a wasteful number, since it uses less digits than its factorization.

1101221200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888081655 (or 888081651 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1101221200120 its reverse (210021221011), we get a palindrome (1311242421131).

The spelling of 1101221200120 in words is "one trillion, one hundred one billion, two hundred twenty-one million, two hundred thousand, one hundred twenty".