111434140402121 has 16 divisors (see below), whose sum is σ = 116048470487040. Its totient is φ = 106883568744960.

The previous prime is 111434140402043. The next prime is 111434140402159. The reversal of 111434140402121 is 121204041434111.

It is a cyclic number.

It is not a de Polignac number, because 111434140402121 - 2¹⁸ = 111434140139977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111434140408121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283963781 + ... + 284355933.

It is an arithmetic number, because the mean of its divisors is an integer number (7253029405440).

Almost surely, 2^{111434140402121} is an apocalyptic number.

It is an amenable number.

111434140402121 is a deficient number, since it is larger than the sum of its proper divisors (4614330084919).

111434140402121 is a wasteful number, since it uses less digits than its factorization.

111434140402121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473416.

The product of its (nonzero) digits is 3072, while the sum is 29.

Adding to 111434140402121 its reverse (121204041434111), we get a palindrome (232638181836232).

The spelling of 111434140402121 in words is "one hundred eleven trillion, four hundred thirty-four billion, one hundred forty million, four hundred two thousand, one hundred twenty-one".