121002221110101 has 32 divisors (see below), whose sum is σ = 166362065025408. Its totient is φ = 78173092650240.

The previous prime is 121002221110079. The next prime is 121002221110151. The reversal of 121002221110101 is 101011122200121.

It is a happy number.

It is not a de Polignac number, because 121002221110101 - 2¹¹ = 121002221108053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002221110151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53099911 + ... + 55331771.

It is an arithmetic number, because the mean of its divisors is an integer number (5198814532044).

Almost surely, 2^{121002221110101} is an apocalyptic number.

It is an amenable number.

121002221110101 is a deficient number, since it is larger than the sum of its proper divisors (45359843915307).

121002221110101 is a wasteful number, since it uses less digits than its factorization.

121002221110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233861.

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

Adding to 121002221110101 its reverse (101011122200121), we get a palindrome (222013343310222).

The spelling of 121002221110101 in words is "one hundred twenty-one trillion, two billion, two hundred twenty-one million, one hundred ten thousand, one hundred one".