111101212122 has 8 divisors (see below), whose sum is σ = 222202424256. Its totient is φ = 37033737372.

The previous prime is 111101212111. The next prime is 111101212133. The reversal of 111101212122 is 221212101111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111101212111) and next prime (111101212133).

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

111101212122 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9258434338 + ... + 9258434349.

It is an arithmetic number, because the mean of its divisors is an integer number (27775303032).

Almost surely, 2^111101212122 is an apocalyptic number.

111101212122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111101212122 is a wasteful number, since it uses less digits than its factorization.

111101212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18516868692.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111101212122 its reverse (221212101111), we get a palindrome (332313313233).

The spelling of 111101212122 in words is "one hundred eleven billion, one hundred one million, two hundred twelve thousand, one hundred twenty-two".