221700458898 has 24 divisors (see below), whose sum is σ = 480533531868. Its totient is φ = 73872070272.

The previous prime is 221700458897. The next prime is 221700458929. The reversal of 221700458898 is 898854007122.

It can be written as a sum of positive squares in 2 ways, for example, as 221555665809 + 144793089 = 470697^2 + 12033^2 .

It is not an unprimeable number, because it can be changed into a prime (221700458897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2291515 + ... + 2386302.

Almost surely, 2^221700458898 is an apocalyptic number.

221700458898 is an abundant number, since it is smaller than the sum of its proper divisors (258833072970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221700458898 is a wasteful number, since it uses less digits than its factorization.

221700458898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680458 (or 4680455 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 221700458898 in words is "two hundred twenty-one billion, seven hundred million, four hundred fifty-eight thousand, eight hundred ninety-eight".