221241146215 has 8 divisors (see below), whose sum is σ = 265513255200. Its totient is φ = 176976997152.

The previous prime is 221241146213. The next prime is 221241146227. The reversal of 221241146215 is 512641142122.

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 221241146215 - 2¹ = 221241146213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221241146213) 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, 1928659 + ... + 2040148.

It is an arithmetic number, because the mean of its divisors is an integer number (33189156900).

Almost surely, 2^221241146215 is an apocalyptic number.

221241146215 is a deficient number, since it is larger than the sum of its proper divisors (44272108985).

221241146215 is a wasteful number, since it uses less digits than its factorization.

221241146215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979961.

The product of its digits is 7680, while the sum is 31.

Adding to 221241146215 its reverse (512641142122), we get a palindrome (733882288337).

The spelling of 221241146215 in words is "two hundred twenty-one billion, two hundred forty-one million, one hundred forty-six thousand, two hundred fifteen".