221411640363215 has 16 divisors (see below), whose sum is σ = 272875676928672. Its totient is φ = 172341534363264.

The previous prime is 221411640363191. The next prime is 221411640363241. The reversal of 221411640363215 is 512363046114122.

It is a cyclic number.

It is not a de Polignac number, because 221411640363215 - 2²² = 221411636168911 is a prime.

It is a super-2 number, since 2×221411640363215² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70395872 + ... + 73473818.

It is an arithmetic number, because the mean of its divisors is an integer number (17054729808042).

Almost surely, 2^{221411640363215} is an apocalyptic number.

221411640363215 is a deficient number, since it is larger than the sum of its proper divisors (51464036565457).

221411640363215 is a wasteful number, since it uses less digits than its factorization.

221411640363215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466826.

The product of its (nonzero) digits is 207360, while the sum is 41.

Adding to 221411640363215 its reverse (512363046114122), we get a palindrome (733774686477337).

The spelling of 221411640363215 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred forty million, three hundred sixty-three thousand, two hundred fifteen".