121101222011001 has 16 divisors (see below), whose sum is σ = 161488599488640. Its totient is φ = 80723996894720.

The previous prime is 121101222010957. The next prime is 121101222011041. The reversal of 121101222011001 is 100110222101121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121101222011001 - 2¹⁷ = 121101221879929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121101222011041) 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, 1052877571 + ... + 1052992583.

It is an arithmetic number, because the mean of its divisors is an integer number (10093037468040).

Almost surely, 2^{121101222011001} is an apocalyptic number.

It is an amenable number.

121101222011001 is a deficient number, since it is larger than the sum of its proper divisors (40387377477639).

121101222011001 is a wasteful number, since it uses less digits than its factorization.

121101222011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156096.

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

Adding to 121101222011001 its reverse (100110222101121), we get a palindrome (221211444112122).

The spelling of 121101222011001 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred twenty-two million, eleven thousand, one".