221300420202 has 12 divisors (see below), whose sum is σ = 479484243810. Its totient is φ = 73766806728.

The previous prime is 221300420171. The next prime is 221300420227. The reversal of 221300420202 is 202024003122.

221300420202 is a `hidden beast` number, since 221 + 3 + 0 + 0 + 420 + 20 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 201025792881 + 20274627321 = 448359^2 + 142389^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12294467789 = 221300420202 / (2 + 2 + 1 + 3 + 0 + 0 + 4 + 2 + 0 + 2 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6147233877 + ... + 6147233912.

Almost surely, 2^221300420202 is an apocalyptic number.

221300420202 is an abundant number, since it is smaller than the sum of its proper divisors (258183823608).

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

221300420202 is a wasteful number, since it uses less digits than its factorization.

221300420202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12294467797 (or 12294467794 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 221300420202 its reverse (202024003122), we get a palindrome (423324423324).

The spelling of 221300420202 in words is "two hundred twenty-one billion, three hundred million, four hundred twenty thousand, two hundred two".