33221300231 has 6 divisors (see below), whose sum is σ = 38645186040. Its totient is φ = 28475400156.

The previous prime is 33221300197. The next prime is 33221300237. The reversal of 33221300231 is 13200312233.

It is a de Polignac number, because none of the positive numbers 2^k-33221300231 is a prime.

It is a super-2 number, since 2×33221300231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221300237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 338992811 + ... + 338992908.

It is an arithmetic number, because the mean of its divisors is an integer number (6440864340).

Almost surely, 2^33221300231 is an apocalyptic number.

33221300231 is a deficient number, since it is larger than the sum of its proper divisors (5423885809).

33221300231 is an equidigital number, since it uses as much as digits as its factorization.

33221300231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677985733 (or 677985726 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 33221300231 its reverse (13200312233), we get a palindrome (46421612464).

The spelling of 33221300231 in words is "thirty-three billion, two hundred twenty-one million, three hundred thousand, two hundred thirty-one".