11031211220120 has 128 divisors (see below), whose sum is σ = 30550005964800. Its totient is φ = 3490963785216.

The previous prime is 11031211220053. The next prime is 11031211220129. The reversal of 11031211220120 is 2102211213011.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031211220129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59308307 + ... + 59494013.

It is an arithmetic number, because the mean of its divisors is an integer number (238671921600).

Almost surely, 2^{11031211220120} is an apocalyptic number.

11031211220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11031211220120 is an abundant number, since it is smaller than the sum of its proper divisors (19518794744680).

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

11031211220120 is a wasteful number, since it uses less digits than its factorization.

11031211220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202057 (or 202053 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11031211220120 its reverse (2102211213011), we get a palindrome (13133422433131).

The spelling of 11031211220120 in words is "eleven trillion, thirty-one billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty".