221411640406471 has 16 divisors (see below), whose sum is σ = 221832322524288. Its totient is φ = 220991277218400.

The previous prime is 221411640406421. The next prime is 221411640406501. The reversal of 221411640406471 is 174604046114122.

It is a cyclic number.

It is not a de Polignac number, because 221411640406471 - 2¹⁹ = 221411639882183 is a prime.

It is a super-3 number, since 3×221411640406471³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221411640406421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24897290101 + ... + 24897298993.

It is an arithmetic number, because the mean of its divisors is an integer number (13864520157768).

Almost surely, 2^{221411640406471} is an apocalyptic number.

221411640406471 is a deficient number, since it is larger than the sum of its proper divisors (420682117817).

221411640406471 is an equidigital number, since it uses as much as digits as its factorization.

221411640406471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21822.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 221411640406471 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred forty million, four hundred six thousand, four hundred seventy-one".