111010110010101 has 12 divisors (see below), whose sum is σ = 160348090981728. Its totient is φ = 74006668791144.

The previous prime is 111010110010087. The next prime is 111010110010123. The reversal of 111010110010101 is 101010011010111.

It is not a de Polignac number, because 111010110010101 - 2¹³ = 111010110001909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010110710101) 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, 4997616 + ... + 15716118.

It is an arithmetic number, because the mean of its divisors is an integer number (13362340915144).

Almost surely, 2^{111010110010101} is an apocalyptic number.

It is an amenable number.

111010110010101 is a deficient number, since it is larger than the sum of its proper divisors (49337980971627).

111010110010101 is a wasteful number, since it uses less digits than its factorization.

111010110010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11869272 (or 11869269 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 111010110010101 its reverse (101010011010111), we get a palindrome (212020121020212).

The spelling of 111010110010101 in words is "one hundred eleven trillion, ten billion, one hundred ten million, ten thousand, one hundred one".