111122111022121 has 8 divisors (see below), whose sum is σ = 117688254492320. Its totient is φ = 104627728683072.

The previous prime is 111122111022079. The next prime is 111122111022281. The reversal of 111122111022121 is 121220111221111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111122111022121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122111028121) 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, 17940279600 + ... + 17940285793.

It is an arithmetic number, because the mean of its divisors is an integer number (14711031811540).

Almost surely, 2^{111122111022121} is an apocalyptic number.

It is an amenable number.

111122111022121 is a deficient number, since it is larger than the sum of its proper divisors (6566143470199).

111122111022121 is a wasteful number, since it uses less digits than its factorization.

111122111022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35880565575.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111122111022121 its reverse (121220111221111), we get a palindrome (232342222243232).

The spelling of 111122111022121 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, one hundred twenty-one".