121252340000 has 240 divisors, whose sum is σ = 331588857600. Its totient is φ = 43255680000.

The previous prime is 121252339991. The next prime is 121252340009. The reversal of 121252340000 is 43252121.

It is an interprime number because it is at equal distance from previous prime (121252339991) and next prime (121252340009).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (121252340009) 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 39 ways as a sum of consecutive naturals, for example, 11654801 + ... + 11665199.

It is an arithmetic number, because the mean of its divisors is an integer number (1381620240).

Almost surely, 2^121252340000 is an apocalyptic number.

121252340000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121252340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165794428800).

121252340000 is an abundant number, since it is smaller than the sum of its proper divisors (210336517600).

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

121252340000 is a wasteful number, since it uses less digits than its factorization.

121252340000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10493 (or 10470 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 121252340000 its reverse (43252121), we get a palindrome (121295592121).

The spelling of 121252340000 in words is "one hundred twenty-one billion, two hundred fifty-two million, three hundred forty thousand".