20111014200427 has 2 divisors, whose sum is σ = 20111014200428. Its totient is φ = 20111014200426.

The previous prime is 20111014200359. The next prime is 20111014200451. The reversal of 20111014200427 is 72400241011102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111014200427 - 2³¹ = 20108866716779 is a prime.

It is a super-2 number, since 2×20111014200427² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20111054200427) 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 as a sum of consecutive naturals, namely, 10055507100213 + 10055507100214.

It is an arithmetic number, because the mean of its divisors is an integer number (10055507100214).

Almost surely, 2^{20111014200427} is an apocalyptic number.

20111014200427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111014200427 is an equidigital number, since it uses as much as digits as its factorization.

20111014200427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 20111014200427 its reverse (72400241011102), we get a palindrome (92511255211529).

The spelling of 20111014200427 in words is "twenty trillion, one hundred eleven billion, fourteen million, two hundred thousand, four hundred twenty-seven".