121323220233111 has 36 divisors (see below), whose sum is σ = 189811605872928. Its totient is φ = 74640910361472.

The previous prime is 121323220233077. The next prime is 121323220233119. The reversal of 121323220233111 is 111332022323121.

121323220233111 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 2 + 322 + 0 + 2 + 331 + 1 + 1 = 666.

It is not a de Polignac number, because 121323220233111 - 2⁷ = 121323220232983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323220233119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4617526 + ... + 16247091.

Almost surely, 2^{121323220233111} is an apocalyptic number.

121323220233111 is a deficient number, since it is larger than the sum of its proper divisors (68488385639817).

121323220233111 is a wasteful number, since it uses less digits than its factorization.

121323220233111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20868472 (or 20868456 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 121323220233111 its reverse (111332022323121), we get a palindrome (232655242556232).

The spelling of 121323220233111 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, two hundred twenty million, two hundred thirty-three thousand, one hundred eleven".