121332220111 has 16 divisors (see below), whose sum is σ = 127637568000. Its totient is φ = 115178450688.

The previous prime is 121332220109. The next prime is 121332220159. The reversal of 121332220111 is 111022233121.

It is a cyclic number.

It is not a de Polignac number, because 121332220111 - 2¹ = 121332220109 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 (121332220171) 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 15 ways as a sum of consecutive naturals, for example, 580690 + ... + 761488.

It is an arithmetic number, because the mean of its divisors is an integer number (7977348000).

Almost surely, 2^121332220111 is an apocalyptic number.

121332220111 is a deficient number, since it is larger than the sum of its proper divisors (6305347889).

121332220111 is a wasteful number, since it uses less digits than its factorization.

121332220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181218.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121332220111 its reverse (111022233121), we get a palindrome (232354453232).

The spelling of 121332220111 in words is "one hundred twenty-one billion, three hundred thirty-two million, two hundred twenty thousand, one hundred eleven".