121200002110221 has 8 divisors (see below), whose sum is σ = 161600164676064. Its totient is φ = 80799920475600.

The previous prime is 121200002110219. The next prime is 121200002110247. The reversal of 121200002110221 is 122011200002121.

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

It is not a de Polignac number, because 121200002110221 - 2¹ = 121200002110219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121200002110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200002110261) 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, 16647730 + ... + 22793571.

It is an arithmetic number, because the mean of its divisors is an integer number (20200020584508).

Almost surely, 2^{121200002110221} is an apocalyptic number.

It is an amenable number.

121200002110221 is a deficient number, since it is larger than the sum of its proper divisors (40400162565843).

121200002110221 is a wasteful number, since it uses less digits than its factorization.

121200002110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40465611.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121200002110221 its reverse (122011200002121), we get a palindrome (243211202112342).

The spelling of 121200002110221 in words is "one hundred twenty-one trillion, two hundred billion, two million, one hundred ten thousand, two hundred twenty-one".