133222304221 has 4 divisors (see below), whose sum is σ = 133227204892. Its totient is φ = 133217403552.

The previous prime is 133222304197. The next prime is 133222304233. The reversal of 133222304221 is 122403222331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122403222331 = 13 ⋅9415632487.

It can be written as a sum of positive squares in 2 ways, for example, as 70164063225 + 63058240996 = 264885^2 + 251114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133222304221 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 (133222304251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2409330 + ... + 2464003.

It is an arithmetic number, because the mean of its divisors is an integer number (33306801223).

Almost surely, 2^133222304221 is an apocalyptic number.

It is an amenable number.

133222304221 is a deficient number, since it is larger than the sum of its proper divisors (4900671).

133222304221 is an equidigital number, since it uses as much as digits as its factorization.

133222304221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4900670.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 133222304221 its reverse (122403222331), we get a palindrome (255625526552).

The spelling of 133222304221 in words is "one hundred thirty-three billion, two hundred twenty-two million, three hundred four thousand, two hundred twenty-one".