20312223211 has 16 divisors (see below), whose sum is σ = 23624588736. Its totient is φ = 17105135616.

The previous prime is 20312223199. The next prime is 20312223241. The reversal of 20312223211 is 11232221302.

It is a cyclic number.

It is not a de Polignac number, because 20312223211 - 2¹³ = 20312215019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20312223241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16156 + ... + 202201.

It is an arithmetic number, because the mean of its divisors is an integer number (1476536796).

Almost surely, 2^20312223211 is an apocalyptic number.

20312223211 is a deficient number, since it is larger than the sum of its proper divisors (3312365525).

20312223211 is a wasteful number, since it uses less digits than its factorization.

20312223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218598.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20312223211 its reverse (11232221302), we get a palindrome (31544444513).

The spelling of 20312223211 in words is "twenty billion, three hundred twelve million, two hundred twenty-three thousand, two hundred eleven".