133221030131 has 4 divisors (see below), whose sum is σ = 152252605872. Its totient is φ = 114189454392.

The previous prime is 133221030109. The next prime is 133221030133. The reversal of 133221030131 is 131030122331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131030122331 = 983 ⋅133296157.

It is a cyclic number.

It is not a de Polignac number, because 133221030131 - 2¹⁸ = 133220767987 is a prime.

It is a super-2 number, since 2×133221030131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133221030133) 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, 9515787860 + ... + 9515787873.

It is an arithmetic number, because the mean of its divisors is an integer number (38063151468).

Almost surely, 2^133221030131 is an apocalyptic number.

133221030131 is a deficient number, since it is larger than the sum of its proper divisors (19031575741).

133221030131 is an equidigital number, since it uses as much as digits as its factorization.

133221030131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19031575740.

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

Adding to 133221030131 its reverse (131030122331), we get a palindrome (264251152462).

The spelling of 133221030131 in words is "one hundred thirty-three billion, two hundred twenty-one million, thirty thousand, one hundred thirty-one".