121121012002101 has 16 divisors (see below), whose sum is σ = 161562176390784. Its totient is φ = 80713597161024.

The previous prime is 121121012002093. The next prime is 121121012002141. The reversal of 121121012002101 is 101200210121121.

It is a happy number.

It is not a de Polignac number, because 121121012002101 - 2³ = 121121012002093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121012002141) 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, 187257216 + ... + 187902918.

It is an arithmetic number, because the mean of its divisors is an integer number (10097636024424).

Almost surely, 2^{121121012002101} is an apocalyptic number.

It is an amenable number.

121121012002101 is a deficient number, since it is larger than the sum of its proper divisors (40441164388683).

121121012002101 is a wasteful number, since it uses less digits than its factorization.

121121012002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671740.

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

Adding to 121121012002101 its reverse (101200210121121), we get a palindrome (222321222123222).

The spelling of 121121012002101 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twelve million, two thousand, one hundred one".