1201201312321 has 8 divisors (see below), whose sum is σ = 1233879758784. Its totient is φ = 1168534105200.

The previous prime is 1201201312313. The next prime is 1201201312327. The reversal of 1201201312321 is 1232131021021.

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 1201201312321 - 2³ = 1201201312313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201201312327) 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, 2592955 + ... + 3020896.

It is an arithmetic number, because the mean of its divisors is an integer number (154234969848).

Almost surely, 2^{1201201312321} is an apocalyptic number.

It is an amenable number.

1201201312321 is a deficient number, since it is larger than the sum of its proper divisors (32678446463).

1201201312321 is an equidigital number, since it uses as much as digits as its factorization.

1201201312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5619671.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1201201312321 its reverse (1232131021021), we get a palindrome (2433332333342).

The spelling of 1201201312321 in words is "one trillion, two hundred one billion, two hundred one million, three hundred twelve thousand, three hundred twenty-one".