121000221220111 has 8 divisors (see below), whose sum is σ = 122134841691264. Its totient is φ = 119865670698840.

The previous prime is 121000221220093. The next prime is 121000221220159. The reversal of 121000221220111 is 111022122000121.

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-121000221220111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000221220811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14008395 + ... + 20934076.

It is an arithmetic number, because the mean of its divisors is an integer number (15266855211408).

Almost surely, 2^{121000221220111} is an apocalyptic number.

121000221220111 is a deficient number, since it is larger than the sum of its proper divisors (1134620471153).

121000221220111 is a wasteful number, since it uses less digits than its factorization.

121000221220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34974941.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121000221220111 its reverse (111022122000121), we get a palindrome (232022343220232).

The spelling of 121000221220111 in words is "one hundred twenty-one trillion, two hundred twenty-one million, two hundred twenty thousand, one hundred eleven".