111221232211020 has 24 divisors (see below), whose sum is σ = 311419450191024. Its totient is φ = 29658995256256.

The previous prime is 111221232210997. The next prime is 111221232211027. The reversal of 111221232211020 is 20112232122111.

It is not an unprimeable number, because it can be changed into a prime (111221232211027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926843601699 + ... + 926843601818.

It is an arithmetic number, because the mean of its divisors is an integer number (12975810424626).

Almost surely, 2^{111221232211020} is an apocalyptic number.

111221232211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221232211020 is an abundant number, since it is smaller than the sum of its proper divisors (200198217980004).

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

111221232211020 is a wasteful number, since it uses less digits than its factorization.

111221232211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853687203529 (or 1853687203527 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 111221232211020 its reverse (20112232122111), we get a palindrome (131333464333131).

The spelling of 111221232211020 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred thirty-two million, two hundred eleven thousand, twenty".