121101112021008 has 80 divisors (see below), whose sum is σ = 357635468972160. Its totient is φ = 34590751346688.

The previous prime is 121101112021007. The next prime is 121101112021117. The reversal of 121101112021008 is 800120211101121.

121101112021008 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121101112021007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48607743 + ... + 51038366.

It is an arithmetic number, because the mean of its divisors is an integer number (4470443362152).

Almost surely, 2^{121101112021008} is an apocalyptic number.

It is an amenable number.

121101112021008 is an abundant number, since it is smaller than the sum of its proper divisors (236534356951152).

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

121101112021008 is a wasteful number, since it uses less digits than its factorization.

121101112021008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99649744 (or 99649738 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 21.

Adding to 121101112021008 its reverse (800120211101121), we get a palindrome (921221323122129).

The spelling of 121101112021008 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred twelve million, twenty-one thousand, eight".