121100002011221 has 8 divisors (see below), whose sum is σ = 122125384012800. Its totient is φ = 120075742489248.

The previous prime is 121100002011161. The next prime is 121100002011223. The reversal of 121100002011221 is 122110200001121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100002011221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121100002011196 and 121100002011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100002011223) 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, 280403216 + ... + 280834761.

It is an arithmetic number, because the mean of its divisors is an integer number (15265673001600).

Almost surely, 2^{121100002011221} is an apocalyptic number.

It is an amenable number.

121100002011221 is a deficient number, since it is larger than the sum of its proper divisors (1025382001579).

121100002011221 is a wasteful number, since it uses less digits than its factorization.

121100002011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561239803.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121100002011221 its reverse (122110200001121), we get a palindrome (243210202012342).

The spelling of 121100002011221 in words is "one hundred twenty-one trillion, one hundred billion, two million, eleven thousand, two hundred twenty-one".