133220101221 has 16 divisors (see below), whose sum is σ = 197637638400. Its totient is φ = 88689864384.

The previous prime is 133220101193. The next prime is 133220101277. The reversal of 133220101221 is 122101022331.

It is not a de Polignac number, because 133220101221 - 2²² = 133215906917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133220101194 and 133220101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133220101121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3411796 + ... + 3450621.

It is an arithmetic number, because the mean of its divisors is an integer number (12352352400).

Almost surely, 2^133220101221 is an apocalyptic number.

It is an amenable number.

133220101221 is a deficient number, since it is larger than the sum of its proper divisors (64417537179).

133220101221 is an equidigital number, since it uses as much as digits as its factorization.

133220101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6863145 (or 6863139 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 133220101221 its reverse (122101022331), we get a palindrome (255321123552).

The spelling of 133220101221 in words is "one hundred thirty-three billion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".