111010221010111 has 4 divisors (see below), whose sum is σ = 111144453442632. Its totient is φ = 110875988577592.

The previous prime is 111010221010067. The next prime is 111010221010123. The reversal of 111010221010111 is 111010122010111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111010221010111 - 2²¹ = 111010218912959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111010221010091 and 111010221010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010221016111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67116215020 + ... + 67116216673.

It is an arithmetic number, because the mean of its divisors is an integer number (27786113360658).

Almost surely, 2^{111010221010111} is an apocalyptic number.

111010221010111 is a deficient number, since it is larger than the sum of its proper divisors (134232432521).

111010221010111 is an equidigital number, since it uses as much as digits as its factorization.

111010221010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134232432520.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111010221010111 its reverse (111010122010111), we get a palindrome (222020343020222).

The spelling of 111010221010111 in words is "one hundred eleven trillion, ten billion, two hundred twenty-one million, ten thousand, one hundred eleven".