1201000120321 has 2 divisors, whose sum is σ = 1201000120322. Its totient is φ = 1201000120320.

The previous prime is 1201000120289. The next prime is 1201000120367. The reversal of 1201000120321 is 1230210001021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199603229696 + 1396890625 = 1095264^2 + 37375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201000120321 - 2⁵ = 1201000120289 is a prime.

It is a super-2 number, since 2×1201000120321² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201000120721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600500060160 + 600500060161.

It is an arithmetic number, because the mean of its divisors is an integer number (600500060161).

Almost surely, 2^{1201000120321} is an apocalyptic number.

It is an amenable number.

1201000120321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201000120321 is an equidigital number, since it uses as much as digits as its factorization.

1201000120321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1201000120321 its reverse (1230210001021), we get a palindrome (2431210121342).

The spelling of 1201000120321 in words is "one trillion, two hundred one billion, one hundred twenty thousand, three hundred twenty-one".