133033311021 has 16 divisors (see below), whose sum is σ = 191044931840. Its totient is φ = 81856906560.

The previous prime is 133033311017. The next prime is 133033311053. The reversal of 133033311021 is 120113330331.

It is not a de Polignac number, because 133033311021 - 2² = 133033311017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133033311071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135900 + ... + 533418.

It is an arithmetic number, because the mean of its divisors is an integer number (11940308240).

Almost surely, 2^133033311021 is an apocalyptic number.

It is an amenable number.

133033311021 is a deficient number, since it is larger than the sum of its proper divisors (58011620819).

133033311021 is a wasteful number, since it uses less digits than its factorization.

133033311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406116.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 133033311021 its reverse (120113330331), we get a palindrome (253146641352).

The spelling of 133033311021 in words is "one hundred thirty-three billion, thirty-three million, three hundred eleven thousand, twenty-one".