121324223142 has 16 divisors (see below), whose sum is σ = 269609384880. Its totient is φ = 40441407696.

The previous prime is 121324223131. The next prime is 121324223149. The reversal of 121324223142 is 241322423121.

121324223142 is a `hidden beast` number, since 1 + 2 + 1 + 324 + 22 + 314 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121324223149) 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 7 ways as a sum of consecutive naturals, for example, 1123372383 + ... + 1123372490.

It is an arithmetic number, because the mean of its divisors is an integer number (16850586555).

Almost surely, 2^121324223142 is an apocalyptic number.

121324223142 is an abundant number, since it is smaller than the sum of its proper divisors (148285161738).

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

121324223142 is a wasteful number, since it uses less digits than its factorization.

121324223142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246744884 (or 2246744878 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 121324223142 its reverse (241322423121), we get a palindrome (362646646263).

The spelling of 121324223142 in words is "one hundred twenty-one billion, three hundred twenty-four million, two hundred twenty-three thousand, one hundred forty-two".