111200122221220 has 24 divisors (see below), whose sum is σ = 238488772765824. Its totient is φ = 43533664869216.

The previous prime is 111200122221211. The next prime is 111200122221233. The reversal of 111200122221220 is 22122221002111.

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, 59149000242 + ... + 59149002121.

It is an arithmetic number, because the mean of its divisors is an integer number (9937032198576).

Almost surely, 2^{111200122221220} is an apocalyptic number.

111200122221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200122221220 is an abundant number, since it is smaller than the sum of its proper divisors (127288650544604).

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

111200122221220 is a wasteful number, since it uses less digits than its factorization.

111200122221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118298002419 (or 118298002417 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111200122221220 its reverse (22122221002111), we get a palindrome (133322343223331).

The spelling of 111200122221220 in words is "one hundred eleven trillion, two hundred billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty".