111121012122102 has 24 divisors (see below), whose sum is σ = 240762407840136. Its totient is φ = 37040304311136.

The previous prime is 111121012122101. The next prime is 111121012122173. The reversal of 111121012122102 is 201221210121111.

It is a happy number.

111121012122102 is a `hidden beast` number, since 1 + 111 + 210 + 121 + 221 + 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 (111121012122101) 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, 26187213 + ... + 30133239.

It is an arithmetic number, because the mean of its divisors is an integer number (10031766993339).

Almost surely, 2^{111121012122102} is an apocalyptic number.

111121012122102 is an abundant number, since it is smaller than the sum of its proper divisors (129641395718034).

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

111121012122102 is a wasteful number, since it uses less digits than its factorization.

111121012122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510492 (or 5510489 counting only the distinct ones).

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

Adding to 111121012122102 its reverse (201221210121111), we get a palindrome (312342222243213).

The spelling of 111121012122102 in words is "one hundred eleven trillion, one hundred twenty-one billion, twelve million, one hundred twenty-two thousand, one hundred two".