101111112121111 has 8 divisors (see below), whose sum is σ = 102177963985104. Its totient is φ = 100045549507200.

The previous prime is 101111112121091. The next prime is 101111112121153. The reversal of 101111112121111 is 111121211111101.

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

It is a cyclic number.

It is not a de Polignac number, because 101111112121111 - 2¹¹ = 101111112119063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101111112121171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322154841 + ... + 322468546.

It is an arithmetic number, because the mean of its divisors is an integer number (12772245498138).

Almost surely, 2^{101111112121111} is an apocalyptic number.

101111112121111 is a deficient number, since it is larger than the sum of its proper divisors (1066851863993).

101111112121111 is a wasteful number, since it uses less digits than its factorization.

101111112121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644625041.

The product of its (nonzero) digits is 4, while the sum is 16.

Adding to 101111112121111 its reverse (111121211111101), we get a palindrome (212232323232212).

The spelling of 101111112121111 in words is "one hundred one trillion, one hundred eleven billion, one hundred twelve million, one hundred twenty-one thousand, one hundred eleven".