121201020000111 has 32 divisors (see below), whose sum is σ = 166644582291648. Its totient is φ = 78328824422400.

The previous prime is 121201020000091. The next prime is 121201020000133. The reversal of 121201020000111 is 111000020102121.

It is not a de Polignac number, because 121201020000111 - 2⁹ = 121201019999599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201020000161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16967866 + ... + 23028471.

It is an arithmetic number, because the mean of its divisors is an integer number (5207643196614).

Almost surely, 2^{121201020000111} is an apocalyptic number.

121201020000111 is a deficient number, since it is larger than the sum of its proper divisors (45443562291537).

121201020000111 is a wasteful number, since it uses less digits than its factorization.

121201020000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39996651.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121201020000111 its reverse (111000020102121), we get a palindrome (232201040102232).

The spelling of 121201020000111 in words is "one hundred twenty-one trillion, two hundred one billion, twenty million, one hundred eleven", and thus it is an aban number.