133020401106221 has 4 divisors (see below), whose sum is σ = 136264801133244. Its totient is φ = 129776001079200.

The previous prime is 133020401106193. The next prime is 133020401106277. The reversal of 133020401106221 is 122601104020331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3396597396196 + 129623803710025 = 1842986^2 + 11385245^2 .

It is a cyclic number.

It is not a de Polignac number, because 133020401106221 - 2⁴² = 128622354595117 is a prime.

It is a super-2 number, since 2×133020401106221² (a number of 29 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 (133020401102221) 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, 1622200013450 + ... + 1622200013531.

It is an arithmetic number, because the mean of its divisors is an integer number (34066200283311).

Almost surely, 2^{133020401106221} is an apocalyptic number.

It is an amenable number.

133020401106221 is a deficient number, since it is larger than the sum of its proper divisors (3244400027023).

133020401106221 is an equidigital number, since it uses as much as digits as its factorization.

133020401106221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244400027022.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 133020401106221 its reverse (122601104020331), we get a palindrome (255621505126552).

The spelling of 133020401106221 in words is "one hundred thirty-three trillion, twenty billion, four hundred one million, one hundred six thousand, two hundred twenty-one".