111221200021210 has 32 divisors (see below), whose sum is σ = 202184579520000. Its totient is φ = 44047072017600.

The previous prime is 111221200021207. The next prime is 111221200021291. The reversal of 111221200021210 is 12120002122111.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47828041 + ... + 50099539.

It is an arithmetic number, because the mean of its divisors is an integer number (6318268110000).

Almost surely, 2^{111221200021210} is an apocalyptic number.

111221200021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111221200021210 is a deficient number, since it is larger than the sum of its proper divisors (90963379498790).

111221200021210 is a wasteful number, since it uses less digits than its factorization.

111221200021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320086.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111221200021210 its reverse (12120002122111), we get a palindrome (123341202143321).

It can be divided in two parts, 11 and 1221200021210, that added together give a palindrome (1221200021221).

The spelling of 111221200021210 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred million, twenty-one thousand, two hundred ten".