20268822131 has 4 divisors (see below), whose sum is σ = 20275118064. Its totient is φ = 20262526200.

The previous prime is 20268822121. The next prime is 20268822139. The reversal of 20268822131 is 13122886202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20268822131 - 2²⁶ = 20201713267 is a prime.

It is a super-2 number, since 2×20268822131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20268822091 and 20268822100.

It is not an unprimeable number, because it can be changed into a prime (20268822139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3143135 + ... + 3149576.

It is an arithmetic number, because the mean of its divisors is an integer number (5068779516).

Almost surely, 2^20268822131 is an apocalyptic number.

20268822131 is a deficient number, since it is larger than the sum of its proper divisors (6295933).

20268822131 is an equidigital number, since it uses as much as digits as its factorization.

20268822131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295932.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 20268822131 in words is "twenty billion, two hundred sixty-eight million, eight hundred twenty-two thousand, one hundred thirty-one".