20321112203 has 16 divisors (see below), whose sum is σ = 24610944960. Its totient is φ = 16407283200.

The previous prime is 20321112193. The next prime is 20321112221. The reversal of 20321112203 is 30221112302.

It is not a de Polignac number, because 20321112203 - 2¹⁶ = 20321046667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20321112103) 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, 1212458 + ... + 1229103.

It is an arithmetic number, because the mean of its divisors is an integer number (1538184060).

Almost surely, 2^20321112203 is an apocalyptic number.

20321112203 is a deficient number, since it is larger than the sum of its proper divisors (4289832757).

20321112203 is a wasteful number, since it uses less digits than its factorization.

20321112203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441638.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20321112203 its reverse (30221112302), we get a palindrome (50542224505).

Subtracting 20321112203 from its reverse (30221112302), we obtain a palindrome (9900000099).

The spelling of 20321112203 in words is "twenty billion, three hundred twenty-one million, one hundred twelve thousand, two hundred three".