20111200273 has 2 divisors, whose sum is σ = 20111200274. Its totient is φ = 20111200272.

The previous prime is 20111200201. The next prime is 20111200357. The reversal of 20111200273 is 37200211102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19591041024 + 520159249 = 139968^2 + 22807^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111200273 - 2¹³ = 20111192081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20111200273.

It is not a weakly prime, because it can be changed into another prime (20111201273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055600136 + 10055600137.

It is an arithmetic number, because the mean of its divisors is an integer number (10055600137).

Almost surely, 2^20111200273 is an apocalyptic number.

It is an amenable number.

20111200273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111200273 is an equidigital number, since it uses as much as digits as its factorization.

20111200273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 20111200273 its reverse (37200211102), we get a palindrome (57311411375).

The spelling of 20111200273 in words is "twenty billion, one hundred eleven million, two hundred thousand, two hundred seventy-three".