221000159471 has 32 divisors (see below), whose sum is σ = 279670272000. Its totient is φ = 169937294976.

The previous prime is 221000159459. The next prime is 221000159483. The reversal of 221000159471 is 174951000122.

It is an interprime number because it is at equal distance from previous prime (221000159459) and next prime (221000159483).

It is a cyclic number.

It is not a de Polignac number, because 221000159471 - 2¹⁴ = 221000143087 is a prime.

It is a super-3 number, since 3×221000159471³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000159411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2949530 + ... + 3023528.

It is an arithmetic number, because the mean of its divisors is an integer number (8739696000).

Almost surely, 2^221000159471 is an apocalyptic number.

221000159471 is a deficient number, since it is larger than the sum of its proper divisors (58670112529).

221000159471 is a wasteful number, since it uses less digits than its factorization.

221000159471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74943.

The product of its (nonzero) digits is 5040, while the sum is 32.

Adding to 221000159471 its reverse (174951000122), we get a palindrome (395951159593).

The spelling of 221000159471 in words is "two hundred twenty-one billion, one hundred fifty-nine thousand, four hundred seventy-one".