111101102010121 has 4 divisors (see below), whose sum is σ = 111101257792000. Its totient is φ = 111100946228244.

The previous prime is 111101102010113. The next prime is 111101102010169. The reversal of 111101102010121 is 121010201101111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111101102010121 - 2³ = 111101102010113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111101102010221) 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, 76816221 + ... + 78249178.

It is an arithmetic number, because the mean of its divisors is an integer number (27775314448000).

Almost surely, 2^{111101102010121} is an apocalyptic number.

It is an amenable number.

111101102010121 is a deficient number, since it is larger than the sum of its proper divisors (155781879).

111101102010121 is an equidigital number, since it uses as much as digits as its factorization.

111101102010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155781878.

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

Adding to 111101102010121 its reverse (121010201101111), we get a palindrome (232111303111232).

The spelling of 111101102010121 in words is "one hundred eleven trillion, one hundred one billion, one hundred two million, ten thousand, one hundred twenty-one".