20331021233 has 8 divisors (see below), whose sum is σ = 20436074496. Its totient is φ = 20226236800.

The previous prime is 20331021209. The next prime is 20331021251. The reversal of 20331021233 is 33212013302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20331021233 - 2¹⁴ = 20331004849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331021203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85328 + ... + 218958.

It is an arithmetic number, because the mean of its divisors is an integer number (2554509312).

Almost surely, 2^20331021233 is an apocalyptic number.

It is an amenable number.

20331021233 is a deficient number, since it is larger than the sum of its proper divisors (105053263).

20331021233 is a wasteful number, since it uses less digits than its factorization.

20331021233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134415.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20331021233 its reverse (33212013302), we get a palindrome (53543034535).

The spelling of 20331021233 in words is "twenty billion, three hundred thirty-one million, twenty-one thousand, two hundred thirty-three".