121121102100112 has 20 divisors (see below), whose sum is σ = 235063908518400. Its totient is φ = 60459448288928.

The previous prime is 121121102100109. The next prime is 121121102100113. The reversal of 121121102100112 is 211001201121121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (121121102100113) 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, 6318912688 + ... + 6318931855.

It is an arithmetic number, because the mean of its divisors is an integer number (11753195425920).

Almost surely, 2^{121121102100112} is an apocalyptic number.

It is an amenable number.

121121102100112 is a deficient number, since it is larger than the sum of its proper divisors (113942806418288).

121121102100112 is a wasteful number, since it uses less digits than its factorization.

121121102100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12637845150 (or 12637845144 counting only the distinct ones).

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

Adding to 121121102100112 its reverse (211001201121121), we get a palindrome (332122303221233).

The spelling of 121121102100112 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred two million, one hundred thousand, one hundred twelve".