121201111001101 has 16 divisors (see below), whose sum is σ = 126716570225280. Its totient is φ = 115706149827840.

The previous prime is 121201111001093. The next prime is 121201111001107. The reversal of 121201111001101 is 101100111102121.

It is a cyclic number.

It is not a de Polignac number, because 121201111001101 - 2³ = 121201111001093 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 (121201111001107) 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, 619099690 + ... + 619295428.

It is an arithmetic number, because the mean of its divisors is an integer number (7919785639080).

Almost surely, 2^{121201111001101} is an apocalyptic number.

It is an amenable number.

121201111001101 is a deficient number, since it is larger than the sum of its proper divisors (5515459224179).

121201111001101 is a wasteful number, since it uses less digits than its factorization.

121201111001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247956.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121201111001101 its reverse (101100111102121), we get a palindrome (222301222103222).

The spelling of 121201111001101 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred eleven million, one thousand, one hundred one".