121102221001 has 4 divisors (see below), whose sum is σ = 121645280512. Its totient is φ = 120559161492.

The previous prime is 121102220923. The next prime is 121102221013. The reversal of 121102221001 is 100122201121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100122201121 = 293 ⋅341713997.

It is a cyclic number.

It is not a de Polignac number, because 121102221001 - 2³⁵ = 86742482633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121102221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271529421 + ... + 271529866.

It is an arithmetic number, because the mean of its divisors is an integer number (30411320128).

Almost surely, 2^121102221001 is an apocalyptic number.

It is an amenable number.

121102221001 is a deficient number, since it is larger than the sum of its proper divisors (543059511).

121102221001 is an equidigital number, since it uses as much as digits as its factorization.

121102221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543059510.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121102221001 its reverse (100122201121), we get a palindrome (221224422122).

The spelling of 121102221001 in words is "one hundred twenty-one billion, one hundred two million, two hundred twenty-one thousand, one".