7145213141221 has 8 divisors (see below), whose sum is σ = 7392505049600. Its totient is φ = 6898971305520.

The previous prime is 7145213141207. The next prime is 7145213141237. The reversal of 7145213141221 is 1221413125417.

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 7145213141221 - 2¹³ = 7145213133029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145213141281) 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, 262504326 + ... + 262531543.

It is an arithmetic number, because the mean of its divisors is an integer number (924063131200).

Almost surely, 2^{7145213141221} is an apocalyptic number.

It is an amenable number.

7145213141221 is a deficient number, since it is larger than the sum of its proper divisors (247291908379).

7145213141221 is a wasteful number, since it uses less digits than its factorization.

7145213141221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525036339.

The product of its digits is 13440, while the sum is 34.

Adding to 7145213141221 its reverse (1221413125417), we get a palindrome (8366626266638).

The spelling of 7145213141221 in words is "seven trillion, one hundred forty-five billion, two hundred thirteen million, one hundred forty-one thousand, two hundred twenty-one".