111222201202100 has 18 divisors (see below), whose sum is σ = 241352176608774. Its totient is φ = 44488880480800.

The previous prime is 111222201202037. The next prime is 111222201202153. The reversal of 111222201202100 is 1202102222111.

It can be written as a sum of positive squares in 3 ways, for example, as 8984298853924 + 102237902348176 = 2997382^2 + 10111276^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556111005911 + ... + 556111006110.

It is an arithmetic number, because the mean of its divisors is an integer number (13408454256043).

Almost surely, 2^{111222201202100} is an apocalyptic number.

111222201202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222201202100 is an abundant number, since it is smaller than the sum of its proper divisors (130129975406674).

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

111222201202100 is a wasteful number, since it uses less digits than its factorization.

111222201202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112222012035 (or 1112222012028 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111222201202100 its reverse (1202102222111), we get a palindrome (112424303424211).

The spelling of 111222201202100 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred one million, two hundred two thousand, one hundred".