133323312021 has 16 divisors (see below), whose sum is σ = 179079028800. Its totient is φ = 88225712640.

The previous prime is 133323312013. The next prime is 133323312029. The reversal of 133323312021 is 120213323331.

It is an interprime number because it is at equal distance from previous prime (133323312013) and next prime (133323312029).

It is not a de Polignac number, because 133323312021 - 2³ = 133323312013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133323311982 and 133323312000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133323312029) 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, 562341 + ... + 763461.

It is an arithmetic number, because the mean of its divisors is an integer number (11192439300).

Almost surely, 2^133323312021 is an apocalyptic number.

It is an amenable number.

133323312021 is a deficient number, since it is larger than the sum of its proper divisors (45755716779).

133323312021 is a wasteful number, since it uses less digits than its factorization.

133323312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202756.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 133323312021 its reverse (120213323331), we get a palindrome (253536635352).

The spelling of 133323312021 in words is "one hundred thirty-three billion, three hundred twenty-three million, three hundred twelve thousand, twenty-one".