221206958411 has 8 divisors (see below), whose sum is σ = 225225036624. Its totient is φ = 217215578880.

The previous prime is 221206958393. The next prime is 221206958417. The reversal of 221206958411 is 114859602122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221206958411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221206958417) 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, 6657950 + ... + 6691091.

It is an arithmetic number, because the mean of its divisors is an integer number (28153129578).

Almost surely, 2^221206958411 is an apocalyptic number.

221206958411 is a deficient number, since it is larger than the sum of its proper divisors (4018078213).

221206958411 is a wasteful number, since it uses less digits than its factorization.

221206958411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13349341.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 221206958411 in words is "two hundred twenty-one billion, two hundred six million, nine hundred fifty-eight thousand, four hundred eleven".