20312223201 has 16 divisors (see below), whose sum is σ = 31675982400. Its totient is φ = 12828772224.

The previous prime is 20312223199. The next prime is 20312223241. The reversal of 20312223201 is 10232221302.

It is not a de Polignac number, because 20312223201 - 2¹ = 20312223199 is a prime.

It is a super-2 number, since 2×20312223201² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20312223241) 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, 19796976 + ... + 19798001.

It is an arithmetic number, because the mean of its divisors is an integer number (1979748900).

Almost surely, 2^20312223201 is an apocalyptic number.

It is an amenable number.

20312223201 is a deficient number, since it is larger than the sum of its proper divisors (11363759199).

20312223201 is a wasteful number, since it uses less digits than its factorization.

20312223201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39595005 (or 39594999 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20312223201 its reverse (10232221302), we get a palindrome (30544444503).

The spelling of 20312223201 in words is "twenty billion, three hundred twelve million, two hundred twenty-three thousand, two hundred one".