111121020012102 has 32 divisors (see below), whose sum is σ = 223620026047488. Its totient is φ = 36810705216096.

The previous prime is 111121020012097. The next prime is 111121020012109. The reversal of 111121020012102 is 201210020121111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121020012109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11388043 + ... + 18759785.

It is an arithmetic number, because the mean of its divisors is an integer number (6988125813984).

Almost surely, 2^{111121020012102} is an apocalyptic number.

111121020012102 is an abundant number, since it is smaller than the sum of its proper divisors (112499006035386).

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

111121020012102 is a wasteful number, since it uses less digits than its factorization.

111121020012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7387324.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111121020012102 its reverse (201210020121111), we get a palindrome (312331040133213).

The spelling of 111121020012102 in words is "one hundred eleven trillion, one hundred twenty-one billion, twenty million, twelve thousand, one hundred two".