121451040000 has 1080 divisors, whose sum is σ = 483123600960. Its totient is φ = 29196288000.

The previous prime is 121451039993. The next prime is 121451040031. The reversal of 121451040000 is 40154121.

121451040000 is a `hidden beast` number, since 1 + 214 + 51 + 0 + 400 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 629279904 + ... + 629280096.

Almost surely, 2^121451040000 is an apocalyptic number.

121451040000 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 121451040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241561800480).

121451040000 is an abundant number, since it is smaller than the sum of its proper divisors (361672560960).

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

121451040000 is a wasteful number, since it uses less digits than its factorization.

121451040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 121451040000 its reverse (40154121), we get a palindrome (121491194121).

The spelling of 121451040000 in words is "one hundred twenty-one billion, four hundred fifty-one million, forty thousand".