121033021320000 has 840 divisors, whose sum is σ = 436790470339080. Its totient is φ = 32031959040000.

The previous prime is 121033021319999. The next prime is 121033021320007. The reversal of 121033021320000 is 23120330121.

121033021320000 is a `hidden beast` number, since 1 + 2 + 10 + 330 + 2 + 1 + 320 + 0 + 0 + 0 = 666.

It can be written as a sum of positive squares in 20 ways, for example, as 120857306094144 + 175715225856 = 10993512^2 + 419184^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121033021320007) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 44156518630 + ... + 44156521370.

Almost surely, 2^{121033021320000} is an apocalyptic number.

121033021320000 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 121033021320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218395235169540).

121033021320000 is an abundant number, since it is smaller than the sum of its proper divisors (315757449019080).

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

121033021320000 is a wasteful number, since it uses less digits than its factorization.

121033021320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661 (or 3633 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121033021320000 its reverse (23120330121), we get a palindrome (121056141650121).

The spelling of 121033021320000 in words is "one hundred twenty-one trillion, thirty-three billion, twenty-one million, three hundred twenty thousand".