111221101211002 has 16 divisors (see below), whose sum is σ = 167952303621000. Its totient is φ = 55237004343360.

The previous prime is 111221101210997. The next prime is 111221101211027. The reversal of 111221101211002 is 200112101122111.

It can be written as a sum of positive squares in 4 ways, for example, as 106068968442441 + 5152132768561 = 10298979^2 + 2269831^2 .

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, 55149352 + ... + 57130492.

Almost surely, 2^{111221101211002} is an apocalyptic number.

111221101211002 is a deficient number, since it is larger than the sum of its proper divisors (56731202409998).

111221101211002 is a wasteful number, since it uses less digits than its factorization.

111221101211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169681.

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

Adding to 111221101211002 its reverse (200112101122111), we get a palindrome (311333202333113).

The spelling of 111221101211002 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred one million, two hundred eleven thousand, two".