111120121212102 has 24 divisors (see below), whose sum is σ = 247267296752736. Its totient is φ = 36038958230736.

The previous prime is 111120121212101. The next prime is 111120121212197. The reversal of 111120121212102 is 201212121021111.

It is a happy number.

111120121212102 is a `hidden beast` number, since 111 + 120 + 121 + 212 + 102 = 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 (111120121212101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83423513758 + ... + 83423515089.

It is an arithmetic number, because the mean of its divisors is an integer number (10302804031364).

Almost surely, 2^{111120121212102} is an apocalyptic number.

111120121212102 is an abundant number, since it is smaller than the sum of its proper divisors (136147175540634).

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

111120121212102 is a wasteful number, since it uses less digits than its factorization.

111120121212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166847028892 (or 166847028889 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111120121212102 its reverse (201212121021111), we get a palindrome (312332242233213).

It can be divided in two parts, 1111 and 20121212102, that multiplied together give a palindrome (22354666645322).

The spelling of 111120121212102 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, one hundred two".