1330121131221 has 8 divisors (see below), whose sum is σ = 1774114739424. Its totient is φ = 886437471920.

The previous prime is 1330121131219. The next prime is 1330121131309. The reversal of 1330121131221 is 1221311210331.

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 1330121131221 - 2¹ = 1330121131219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330121136221) 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, 77477211 + ... + 77494376.

It is an arithmetic number, because the mean of its divisors is an integer number (221764342428).

Almost surely, 2^{1330121131221} is an apocalyptic number.

It is an amenable number.

1330121131221 is a deficient number, since it is larger than the sum of its proper divisors (443993608203).

1330121131221 is a wasteful number, since it uses less digits than its factorization.

1330121131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154974451.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1330121131221 its reverse (1221311210331), we get a palindrome (2551432341552).

The spelling of 1330121131221 in words is "one trillion, three hundred thirty billion, one hundred twenty-one million, one hundred thirty-one thousand, two hundred twenty-one".