121222230111 has 24 divisors (see below), whose sum is σ = 177344743680. Its totient is φ = 79778561616.

The previous prime is 121222230109. The next prime is 121222230137. The reversal of 121222230111 is 111032222121.

It is not a de Polignac number, because 121222230111 - 2¹ = 121222230109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222230211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6123916 + ... + 6143678.

It is an arithmetic number, because the mean of its divisors is an integer number (7389364320).

Almost surely, 2^121222230111 is an apocalyptic number.

121222230111 is a deficient number, since it is larger than the sum of its proper divisors (56122513569).

121222230111 is a wasteful number, since it uses less digits than its factorization.

121222230111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28475 (or 28472 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121222230111 its reverse (111032222121), we get a palindrome (232254452232).

The spelling of 121222230111 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred thirty thousand, one hundred eleven".