121323213323020 has 24 divisors (see below), whose sum is σ = 255336250728384. Its totient is φ = 48423094329216.

The previous prime is 121323213323017. The next prime is 121323213323089. The reversal of 121323213323020 is 20323312323121.

It is a happy number.

It is a super-3 number, since 3×121323213323020³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121323213323020.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6636928132 + ... + 6636946411.

It is an arithmetic number, because the mean of its divisors is an integer number (10639010447016).

Almost surely, 2^{121323213323020} is an apocalyptic number.

121323213323020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121323213323020 is an abundant number, since it is smaller than the sum of its proper divisors (134013037405364).

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

121323213323020 is a wasteful number, since it uses less digits than its factorization.

121323213323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13273875009 (or 13273875007 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 121323213323020 its reverse (20323312323121), we get a palindrome (141646525646141).

The spelling of 121323213323020 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, two hundred thirteen million, three hundred twenty-three thousand, twenty".