121320211310321 has 8 divisors (see below), whose sum is σ = 123306117941160. Its totient is φ = 119348143750528.

The previous prime is 121320211310317. The next prime is 121320211310327. The reversal of 121320211310321 is 123013112023121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45353490250000 + 75966721060321 = 6734500^2 + 8715889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121320211310321 - 2² = 121320211310317 is a prime.

It is a super-2 number, since 2×121320211310321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121320211310327) by changing a digit.

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, 3459750086 + ... + 3459785151.

It is an arithmetic number, because the mean of its divisors is an integer number (15413264742645).

Almost surely, 2^{121320211310321} is an apocalyptic number.

It is an amenable number.

121320211310321 is a deficient number, since it is larger than the sum of its proper divisors (1985906630839).

121320211310321 is an equidigital number, since it uses as much as digits as its factorization.

121320211310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6919535523.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121320211310321 its reverse (123013112023121), we get a palindrome (244333323333442).

The spelling of 121320211310321 in words is "one hundred twenty-one trillion, three hundred twenty billion, two hundred eleven million, three hundred ten thousand, three hundred twenty-one".