20321203233 has 16 divisors (see below), whose sum is σ = 27898827840. Its totient is φ = 13147407936.

The previous prime is 20321203229. The next prime is 20321203313. The reversal of 20321203233 is 33230212302.

It is not a de Polignac number, because 20321203233 - 2² = 20321203229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20321202233) 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, 192135 + ... + 278492.

It is an arithmetic number, because the mean of its divisors is an integer number (1743676740).

Almost surely, 2^20321203233 is an apocalyptic number.

It is an amenable number.

20321203233 is a deficient number, since it is larger than the sum of its proper divisors (7577624607).

20321203233 is a wasteful number, since it uses less digits than its factorization.

20321203233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471056.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20321203233 its reverse (33230212302), we get a palindrome (53551415535).

The spelling of 20321203233 in words is "twenty billion, three hundred twenty-one million, two hundred three thousand, two hundred thirty-three".