13215250034221 has 8 divisors (see below), whose sum is σ = 13496509471104. Its totient is φ = 12933994093440.

The previous prime is 13215250034213. The next prime is 13215250034279. The reversal of 13215250034221 is 12243005251231.

It is a happy number.

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 13215250034221 - 2³ = 13215250034213 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 (13215250037221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7639566 + ... + 9208336.

It is an arithmetic number, because the mean of its divisors is an integer number (1687063683888).

Almost surely, 2^{13215250034221} is an apocalyptic number.

It is an amenable number.

13215250034221 is a deficient number, since it is larger than the sum of its proper divisors (281259436883).

13215250034221 is a wasteful number, since it uses less digits than its factorization.

13215250034221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748051.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 13215250034221 its reverse (12243005251231), we get a palindrome (25458255285452).

The spelling of 13215250034221 in words is "thirteen trillion, two hundred fifteen billion, two hundred fifty million, thirty-four thousand, two hundred twenty-one".