221300131133 has 4 divisors (see below), whose sum is σ = 221307854880. Its totient is φ = 221292407388.

The previous prime is 221300131127. The next prime is 221300131177. The reversal of 221300131133 is 331131003122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221300131133 - 2³⁶ = 152580654397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221300131123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3818735 + ... + 3876252.

It is an arithmetic number, because the mean of its divisors is an integer number (55326963720).

Almost surely, 2^221300131133 is an apocalyptic number.

It is an amenable number.

221300131133 is a deficient number, since it is larger than the sum of its proper divisors (7723747).

221300131133 is an equidigital number, since it uses as much as digits as its factorization.

221300131133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7723746.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 221300131133 its reverse (331131003122), we get a palindrome (552431134255).

The spelling of 221300131133 in words is "two hundred twenty-one billion, three hundred million, one hundred thirty-one thousand, one hundred thirty-three".