133333021211 has 4 divisors (see below), whose sum is σ = 143589407472. Its totient is φ = 123076634952.

The previous prime is 133333021207. The next prime is 133333021229. The reversal of 133333021211 is 112120333331.

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

It is a cyclic number.

It is not a de Polignac number, because 133333021211 - 2² = 133333021207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133333021111) 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, 5128193111 + ... + 5128193136.

It is an arithmetic number, because the mean of its divisors is an integer number (35897351868).

Almost surely, 2^133333021211 is an apocalyptic number.

133333021211 is a deficient number, since it is larger than the sum of its proper divisors (10256386261).

133333021211 is a wasteful number, since it uses less digits than its factorization.

133333021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256386260.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 133333021211 its reverse (112120333331), we get a palindrome (245453354542).

The spelling of 133333021211 in words is "one hundred thirty-three billion, three hundred thirty-three million, twenty-one thousand, two hundred eleven".