121424111208 has 64 divisors (see below), whose sum is σ = 345515788800. Its totient is φ = 39487512960.

The previous prime is 121424111201. The next prime is 121424111351. The reversal of 121424111208 is 802111424121.

121424111208 is a `hidden beast` number, since 1 + 2 + 1 + 42 + 411 + 1 + 208 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121424111201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6846616 + ... + 6864327.

It is an arithmetic number, because the mean of its divisors is an integer number (5398684200).

Almost surely, 2^121424111208 is an apocalyptic number.

121424111208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121424111208 is an abundant number, since it is smaller than the sum of its proper divisors (224091677592).

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

121424111208 is a wasteful number, since it uses less digits than its factorization.

121424111208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13710999 (or 13710989 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

Adding to 121424111208 its reverse (802111424121), we get a palindrome (923535535329).

It can be divided in two parts, 1214241 and 11208, that added together give a square (1225449 = 1107²).

The spelling of 121424111208 in words is "one hundred twenty-one billion, four hundred twenty-four million, one hundred eleven thousand, two hundred eight".