121121023212320 has 24 divisors (see below), whose sum is σ = 286148417339484. Its totient is φ = 48448409284864.

The previous prime is 121121023212289. The next prime is 121121023212323. The reversal of 121121023212320 is 23212320121121.

It can be written as a sum of positive squares in 2 ways, for example, as 112381455424144 + 8739567788176 = 10601012^2 + 2956276^2 .

It is not an unprimeable number, because it can be changed into a prime (121121023212323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378503197379 + ... + 378503197698.

Almost surely, 2^{121121023212320} is an apocalyptic number.

121121023212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121023212320 is an abundant number, since it is smaller than the sum of its proper divisors (165027394127164).

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

121121023212320 is an equidigital number, since it uses as much as digits as its factorization.

121121023212320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757006395092 (or 757006395084 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 121121023212320 its reverse (23212320121121), we get a palindrome (144333343333441).

The spelling of 121121023212320 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty-three million, two hundred twelve thousand, three hundred twenty".