1013221201321 has 8 divisors (see below), whose sum is σ = 1179815523264. Its totient is φ = 852088988400.

The previous prime is 1013221201319. The next prime is 1013221201337. The reversal of 1013221201321 is 1231021223101.

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 1013221201321 - 2¹ = 1013221201319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1013221201361) 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, 1365526855 + ... + 1365527596.

It is an arithmetic number, because the mean of its divisors is an integer number (147476940408).

Almost surely, 2^{1013221201321} is an apocalyptic number.

It is an amenable number.

1013221201321 is a deficient number, since it is larger than the sum of its proper divisors (166594321943).

1013221201321 is an equidigital number, since it uses as much as digits as its factorization.

1013221201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731054511.

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

Adding to 1013221201321 its reverse (1231021223101), we get a palindrome (2244242424422).

The spelling of 1013221201321 in words is "one trillion, thirteen billion, two hundred twenty-one million, two hundred one thousand, three hundred twenty-one".