221701489481 has 8 divisors (see below), whose sum is σ = 229068880128. Its totient is φ = 214347582000.

The previous prime is 221701489469. The next prime is 221701489487. The reversal of 221701489481 is 184984107122.

It is a happy number.

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-221701489481 is a prime.

It is a super-2 number, since 2×221701489481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221701489487) 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, 3337355 + ... + 3403136.

It is an arithmetic number, because the mean of its divisors is an integer number (28633610016).

Almost surely, 2^221701489481 is an apocalyptic number.

It is an amenable number.

221701489481 is a deficient number, since it is larger than the sum of its proper divisors (7367390647).

221701489481 is a wasteful number, since it uses less digits than its factorization.

221701489481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741583.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 221701489481 in words is "two hundred twenty-one billion, seven hundred one million, four hundred eighty-nine thousand, four hundred eighty-one".