121033121320 has 64 divisors (see below), whose sum is σ = 288719928000. Its totient is φ = 45535177728.

The previous prime is 121033121311. The next prime is 121033121353. The reversal of 121033121320 is 23121330121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 467217 + ... + 678496.

It is an arithmetic number, because the mean of its divisors is an integer number (4511248875).

Almost surely, 2^121033121320 is an apocalyptic number.

121033121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121033121320 is an abundant number, since it is smaller than the sum of its proper divisors (167686806680).

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

121033121320 is a wasteful number, since it uses less digits than its factorization.

121033121320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145882 (or 1145878 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121033121320 its reverse (23121330121), we get a palindrome (144154451441).

The spelling of 121033121320 in words is "one hundred twenty-one billion, thirty-three million, one hundred twenty-one thousand, three hundred twenty".