121112122221102 has 8 divisors (see below), whose sum is σ = 242224244442216. Its totient is φ = 40370707407032.

The previous prime is 121112122221091. The next prime is 121112122221119. The reversal of 121112122221102 is 201122221211121.

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

121112122221102 is an admirable number.

It is a super-2 number, since 2×121112122221102² (a number of 29 digits) contains 22 as substring.

It is a congruent 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, 10092676851753 + ... + 10092676851764.

It is an arithmetic number, because the mean of its divisors is an integer number (30278030555277).

Almost surely, 2^{121112122221102} is an apocalyptic number.

121112122221102 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.

121112122221102 is a wasteful number, since it uses less digits than its factorization.

121112122221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20185353703522.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121112122221102 its reverse (201122221211121), we get a palindrome (322234343432223).

The spelling of 121112122221102 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred two".