121325345020 has 96 divisors (see below), whose sum is σ = 284723631360. Its totient is φ = 43053335040.

The previous prime is 121325344969. The next prime is 121325345021. The reversal of 121325345020 is 20543523121.

It is a self number, because there is not a number n which added to its sum of digits gives 121325345020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121325345021) 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 31 ways as a sum of consecutive naturals, for example, 1744147 + ... + 1812373.

It is an arithmetic number, because the mean of its divisors is an integer number (2965871160).

Almost surely, 2^121325345020 is an apocalyptic number.

121325345020 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 121325345020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142361815680).

121325345020 is an abundant number, since it is smaller than the sum of its proper divisors (163398286340).

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

121325345020 is a wasteful number, since it uses less digits than its factorization.

121325345020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68443 (or 68441 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 121325345020 its reverse (20543523121), we get a palindrome (141868868141).

The spelling of 121325345020 in words is "one hundred twenty-one billion, three hundred twenty-five million, three hundred forty-five thousand, twenty".