111001000221220 has 48 divisors (see below), whose sum is σ = 250000266680640. Its totient is φ = 41269885278336.

The previous prime is 111001000221217. The next prime is 111001000221247. The reversal of 111001000221220 is 22122000100111.

It is a super-2 number, since 2×111001000221220² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111001000221220.

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, 2755714722 + ... + 2755755001.

It is an arithmetic number, because the mean of its divisors is an integer number (5208338889180).

Almost surely, 2^{111001000221220} is an apocalyptic number.

111001000221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001000221220 is an abundant number, since it is smaller than the sum of its proper divisors (138999266459420).

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

111001000221220 is a wasteful number, since it uses less digits than its factorization.

111001000221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511469804 (or 5511469802 counting only the distinct ones).

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

Adding to 111001000221220 its reverse (22122000100111), we get a palindrome (133123000321331).

The spelling of 111001000221220 in words is "one hundred eleven trillion, one billion, two hundred twenty-one thousand, two hundred twenty".