20321012033 has 16 divisors (see below), whose sum is σ = 24604652160. Its totient is φ = 16383741696.

The previous prime is 20321011973. The next prime is 20321012051. The reversal of 20321012033 is 33021012302.

It is not a de Polignac number, because 20321012033 - 2⁶ = 20321011969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (20321012083) 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, 155483 + ... + 254591.

It is an arithmetic number, because the mean of its divisors is an integer number (1537790760).

Almost surely, 2^20321012033 is an apocalyptic number.

It is an amenable number.

20321012033 is a deficient number, since it is larger than the sum of its proper divisors (4283640127).

20321012033 is a wasteful number, since it uses less digits than its factorization.

20321012033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100856.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20321012033 its reverse (33021012302), we get a palindrome (53342024335).

The spelling of 20321012033 in words is "twenty billion, three hundred twenty-one million, twelve thousand, thirty-three".