111011012111121 has 8 divisors (see below), whose sum is σ = 148716174203424. Its totient is φ = 73656595713120.

The previous prime is 111011012111117. The next prime is 111011012111267. The reversal of 111011012111121 is 121111210110111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111011012111121 - 2² = 111011012111117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111011012111121.

It is not an unprimeable number, because it can be changed into a prime (111011012011121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87686422836 + ... + 87686424101.

It is an arithmetic number, because the mean of its divisors is an integer number (18589521775428).

Almost surely, 2^{111011012111121} is an apocalyptic number.

It is an amenable number.

111011012111121 is a deficient number, since it is larger than the sum of its proper divisors (37705162092303).

111011012111121 is a wasteful number, since it uses less digits than its factorization.

111011012111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175372847151.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111011012111121 its reverse (121111210110111), we get a palindrome (232122222221232).

The spelling of 111011012111121 in words is "one hundred eleven trillion, eleven billion, twelve million, one hundred eleven thousand, one hundred twenty-one".