121342123000 has 64 divisors (see below), whose sum is σ = 324503524800. Its totient is φ = 41603011200.

The previous prime is 121342122989. The next prime is 121342123009. The reversal of 121342123000 is 321243121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121342123009) 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 15 ways as a sum of consecutive naturals, for example, 8660295 + ... + 8674294.

It is an arithmetic number, because the mean of its divisors is an integer number (5070367575).

Almost surely, 2^121342123000 is an apocalyptic number.

121342123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121342123000 is an abundant number, since it is smaller than the sum of its proper divisors (203161401800).

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

121342123000 is a wasteful number, since it uses less digits than its factorization.

121342123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17334617 (or 17334603 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121342123000 its reverse (321243121), we get a palindrome (121663366121).

The spelling of 121342123000 in words is "one hundred twenty-one billion, three hundred forty-two million, one hundred twenty-three thousand".