121002221202111 has 6 divisors (see below), whose sum is σ = 174780986180840. Its totient is φ = 80668147468068.

The previous prime is 121002221202101. The next prime is 121002221202113. The reversal of 121002221202111 is 111202122200121.

121002221202111 is a `hidden beast` number, since 1 + 210 + 0 + 2 + 221 + 20 + 211 + 1 = 666.

It is not a de Polignac number, because 121002221202111 - 2¹⁹ = 121002220677823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002221202113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6722345622331 + ... + 6722345622348.

Almost surely, 2^{121002221202111} is an apocalyptic number.

121002221202111 is a deficient number, since it is larger than the sum of its proper divisors (53778764978729).

121002221202111 is a wasteful number, since it uses less digits than its factorization.

121002221202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13444691244685 (or 13444691244682 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121002221202111 its reverse (111202122200121), we get a palindrome (232204343402232).

The spelling of 121002221202111 in words is "one hundred twenty-one trillion, two billion, two hundred twenty-one million, two hundred two thousand, one hundred eleven".