221300131204 has 6 divisors (see below), whose sum is σ = 387275229614. Its totient is φ = 110650065600.

The previous prime is 221300131201. The next prime is 221300131223. The reversal of 221300131204 is 402131003122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 163507009600 + 57793121604 = 404360^2 + 240402^2 .

It is a super-2 number, since 2×221300131204² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221300131201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27662516397 + ... + 27662516404.

Almost surely, 2^221300131204 is an apocalyptic number.

It is an amenable number.

221300131204 is a deficient number, since it is larger than the sum of its proper divisors (165975098410).

221300131204 is a wasteful number, since it uses less digits than its factorization.

221300131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55325032805 (or 55325032803 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221300131204 its reverse (402131003122), we get a palindrome (623431134326).

The spelling of 221300131204 in words is "two hundred twenty-one billion, three hundred million, one hundred thirty-one thousand, two hundred four".