28101427201 has 2 divisors, whose sum is σ = 28101427202. Its totient is φ = 28101427200.

The previous prime is 28101427169. The next prime is 28101427213. The reversal of 28101427201 is 10272410182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23005608976 + 5095818225 = 151676^2 + 71385^2 .

It is a cyclic number.

It is not a de Polignac number, because 28101427201 - 2⁵ = 28101427169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28101427201.

It is not a weakly prime, because it can be changed into another prime (28101427241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14050713600 + 14050713601.

It is an arithmetic number, because the mean of its divisors is an integer number (14050713601).

Almost surely, 2^28101427201 is an apocalyptic number.

It is an amenable number.

28101427201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28101427201 is an equidigital number, since it uses as much as digits as its factorization.

28101427201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 28.

Adding to 28101427201 its reverse (10272410182), we get a palindrome (38373837383).

The spelling of 28101427201 in words is "twenty-eight billion, one hundred one million, four hundred twenty-seven thousand, two hundred one".