20004122357 has 2 divisors, whose sum is σ = 20004122358. Its totient is φ = 20004122356.

The previous prime is 20004122287. The next prime is 20004122371. The reversal of 20004122357 is 75322140002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10907922481 + 9096199876 = 104441^2 + 95374^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004122357 - 2¹² = 20004118261 is a prime.

It is a super-2 number, since 2×20004122357² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004122057) 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 as a sum of consecutive naturals, namely, 10002061178 + 10002061179.

It is an arithmetic number, because the mean of its divisors is an integer number (10002061179).

Almost surely, 2^20004122357 is an apocalyptic number.

It is an amenable number.

20004122357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004122357 is an equidigital number, since it uses as much as digits as its factorization.

20004122357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

Adding to 20004122357 its reverse (75322140002), we get a palindrome (95326262359).

The spelling of 20004122357 in words is "twenty billion, four million, one hundred twenty-two thousand, three hundred fifty-seven".