111211100202222 has 48 divisors (see below), whose sum is σ = 241400937566880. Its totient is φ = 37002182150976.

The previous prime is 111211100202197. The next prime is 111211100202239. The reversal of 111211100202222 is 222202001112111.

111211100202222 is a `hidden beast` number, since 11 + 121 + 110 + 0 + 202 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111211100202195 and 111211100202204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22249303 + ... + 26785325.

It is an arithmetic number, because the mean of its divisors is an integer number (5029186199310).

Almost surely, 2^{111211100202222} is an apocalyptic number.

111211100202222 is an abundant number, since it is smaller than the sum of its proper divisors (130189837364658).

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

111211100202222 is a wasteful number, since it uses less digits than its factorization.

111211100202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538537 (or 4538534 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111211100202222 its reverse (222202001112111), we get a palindrome (333413101314333).

The spelling of 111211100202222 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred million, two hundred two thousand, two hundred twenty-two".