121202102020111 has 32 divisors (see below), whose sum is σ = 141742542297600. Its totient is φ = 101485603789440.

The previous prime is 121202102020079. The next prime is 121202102020141. The reversal of 121202102020111 is 111020201202121.

It is a cyclic number.

It is not a de Polignac number, because 121202102020111 - 2⁵ = 121202102020079 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 (121202102020141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161199516 + ... + 161949646.

It is an arithmetic number, because the mean of its divisors is an integer number (4429454446800).

Almost surely, 2^{121202102020111} is an apocalyptic number.

121202102020111 is a deficient number, since it is larger than the sum of its proper divisors (20540440277489).

121202102020111 is a wasteful number, since it uses less digits than its factorization.

121202102020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752079.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121202102020111 its reverse (111020201202121), we get a palindrome (232222303222232).

The spelling of 121202102020111 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred two million, twenty thousand, one hundred eleven".