121311221232124 has 24 divisors (see below), whose sum is σ = 264679028143488. Its totient is φ = 47264112168240.

The previous prime is 121311221232121. The next prime is 121311221232133. The reversal of 121311221232124 is 421232122113121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 121311221232092 and 121311221232101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121311221232121) 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 7 ways as a sum of consecutive naturals, for example, 196933800394 + ... + 196933801009.

It is an arithmetic number, because the mean of its divisors is an integer number (11028292839312).

Almost surely, 2^{121311221232124} is an apocalyptic number.

121311221232124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121311221232124 is an abundant number, since it is smaller than the sum of its proper divisors (143367806911364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121311221232124 is a wasteful number, since it uses less digits than its factorization.

121311221232124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393867601425 (or 393867601423 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

Adding to 121311221232124 its reverse (421232122113121), we get a palindrome (542543343345245).

The spelling of 121311221232124 in words is "one hundred twenty-one trillion, three hundred eleven billion, two hundred twenty-one million, two hundred thirty-two thousand, one hundred twenty-four".