133120221121 has 4 divisors (see below), whose sum is σ = 133122636544. Its totient is φ = 133117805700.

The previous prime is 133120221109. The next prime is 133120221133. The reversal of 133120221121 is 121122021331.

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 an interprime number because it is at equal distance from previous prime (133120221109) and next prime (133120221133).

It is a cyclic number.

It is not a de Polignac number, because 133120221121 - 2⁵ = 133120221089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133120221181) 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, 1123065 + ... + 1235926.

It is an arithmetic number, because the mean of its divisors is an integer number (33280659136).

Almost surely, 2^133120221121 is an apocalyptic number.

It is an amenable number.

133120221121 is a deficient number, since it is larger than the sum of its proper divisors (2415423).

133120221121 is an equidigital number, since it uses as much as digits as its factorization.

133120221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415422.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 133120221121 its reverse (121122021331), we get a palindrome (254242242452).

The spelling of 133120221121 in words is "one hundred thirty-three billion, one hundred twenty million, two hundred twenty-one thousand, one hundred twenty-one".