133230321021 has 48 divisors (see below), whose sum is σ = 221177315328. Its totient is φ = 69797959200.

The previous prime is 133230321013. The next prime is 133230321061. The reversal of 133230321021 is 120123032331.

It is not a de Polignac number, because 133230321021 - 2³ = 133230321013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133230321061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48445 + ... + 518466.

It is an arithmetic number, because the mean of its divisors is an integer number (4607860736).

Almost surely, 2^133230321021 is an apocalyptic number.

It is an amenable number.

133230321021 is a deficient number, since it is larger than the sum of its proper divisors (87946994307).

133230321021 is a wasteful number, since it uses less digits than its factorization.

133230321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566990 (or 566971 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 133230321021 its reverse (120123032331), we get a palindrome (253353353352).

The spelling of 133230321021 in words is "one hundred thirty-three billion, two hundred thirty million, three hundred twenty-one thousand, twenty-one".