1201023412321 has 8 divisors (see below), whose sum is σ = 1205838439400. Its totient is φ = 1196216235648.

The previous prime is 1201023412291. The next prime is 1201023412343. The reversal of 1201023412321 is 1232143201021.

It can be written as a sum of positive squares in 4 ways, for example, as 435461411025 + 765562001296 = 659895^2 + 874964^2 .

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 1201023412321 - 2¹⁹ = 1201022888033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201023412292 and 1201023412301.

It is not an unprimeable number, because it can be changed into a prime (1201023472321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655916 + ... + 2268061.

It is an arithmetic number, because the mean of its divisors is an integer number (150729804925).

Almost surely, 2^{1201023412321} is an apocalyptic number.

It is an amenable number.

1201023412321 is a deficient number, since it is larger than the sum of its proper divisors (4815027079).

1201023412321 is an equidigital number, since it uses as much as digits as its factorization.

1201023412321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925203.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1201023412321 its reverse (1232143201021), we get a palindrome (2433166613342).

The spelling of 1201023412321 in words is "one trillion, two hundred one billion, twenty-three million, four hundred twelve thousand, three hundred twenty-one".