1000320121121 has 2 divisors, whose sum is σ = 1000320121122. Its totient is φ = 1000320121120.

The previous prime is 1000320121063. The next prime is 1000320121181. The reversal of 1000320121121 is 1211210230001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 989449973521 + 10870147600 = 994711^2 + 104260^2 .

It is an emirp because it is prime and its reverse (1211210230001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000320121121 - 2¹⁴ = 1000320104737 is a prime.

It is a super-2 number, since 2×1000320121121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1000320121096 and 1000320121105.

It is not a weakly prime, because it can be changed into another prime (1000320121181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500160060560 + 500160060561.

It is an arithmetic number, because the mean of its divisors is an integer number (500160060561).

Almost surely, 2^{1000320121121} is an apocalyptic number.

It is an amenable number.

1000320121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000320121121 is an equidigital number, since it uses as much as digits as its factorization.

1000320121121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1000320121121 its reverse (1211210230001), we get a palindrome (2211530351122).

The spelling of 1000320121121 in words is "one trillion, three hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".