133313122021 has 4 divisors (see below), whose sum is σ = 137613545344. Its totient is φ = 129012698700.

The previous prime is 133313121989. The next prime is 133313122039. The reversal of 133313122021 is 120221313331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133313122021 - 2⁵ = 133313121989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133313121983 and 133313122001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133313122091) 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, 2150211615 + ... + 2150211676.

It is an arithmetic number, because the mean of its divisors is an integer number (34403386336).

Almost surely, 2^133313122021 is an apocalyptic number.

It is an amenable number.

133313122021 is a deficient number, since it is larger than the sum of its proper divisors (4300423323).

133313122021 is an equidigital number, since it uses as much as digits as its factorization.

133313122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300423322.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 133313122021 its reverse (120221313331), we get a palindrome (253534435352).

The spelling of 133313122021 in words is "one hundred thirty-three billion, three hundred thirteen million, one hundred twenty-two thousand, twenty-one".