121001100011221 has 8 divisors (see below), whose sum is σ = 127372221295200. Its totient is φ = 114630242960880.

The previous prime is 121001100011219. The next prime is 121001100011249. The reversal of 121001100011221 is 122110001100121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121001100011221 - 2¹ = 121001100011219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001100011201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65118091 + ... + 66950488.

It is an arithmetic number, because the mean of its divisors is an integer number (15921527661900).

Almost surely, 2^{121001100011221} is an apocalyptic number.

It is an amenable number.

121001100011221 is a deficient number, since it is larger than the sum of its proper divisors (6371121283979).

121001100011221 is a wasteful number, since it uses less digits than its factorization.

121001100011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132116819.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121001100011221 its reverse (122110001100121), we get a palindrome (243111101111342).

The spelling of 121001100011221 in words is "one hundred twenty-one trillion, one billion, one hundred million, eleven thousand, two hundred twenty-one".