121323300520000 has 140 divisors (see below), whose sum is σ = 300953758782160. Its totient is φ = 48511349568000.

The previous prime is 121323300519989. The next prime is 121323300520027. The reversal of 121323300520000 is 25003323121.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 107719771 + ... + 108840229.

Almost surely, 2^{121323300520000} is an apocalyptic number.

121323300520000 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 121323300520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150476879391080).

121323300520000 is an abundant number, since it is smaller than the sum of its proper divisors (179630458262160).

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

121323300520000 is an equidigital number, since it uses as much as digits as its factorization.

121323300520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123198 (or 1123173 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 121323300520000 its reverse (25003323121), we get a palindrome (121348303843121).

The spelling of 121323300520000 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, three hundred million, five hundred twenty thousand".