111222120021102 has 48 divisors (see below), whose sum is σ = 244583286060672. Its totient is φ = 36519906099600.

The previous prime is 111222120021079. The next prime is 111222120021107. The reversal of 111222120021102 is 201120021222111.

111222120021102 is a `hidden beast` number, since 111 + 222 + 120 + 0 + 211 + 0 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222120021107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56131473 + ... + 58079139.

It is an arithmetic number, because the mean of its divisors is an integer number (5095485126264).

Almost surely, 2^{111222120021102} is an apocalyptic number.

111222120021102 is an abundant number, since it is smaller than the sum of its proper divisors (133361166039570).

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

111222120021102 is a wasteful number, since it uses less digits than its factorization.

111222120021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995093 (or 1995090 counting only the distinct ones).

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

Adding to 111222120021102 its reverse (201120021222111), we get a palindrome (312342141243213).

The spelling of 111222120021102 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty million, twenty-one thousand, one hundred two".