201111215563 has 2 divisors, whose sum is σ = 201111215564. Its totient is φ = 201111215562.

The previous prime is 201111215521. The next prime is 201111215581. The reversal of 201111215563 is 365512111102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201111215563 - 2¹³ = 201111207371 is a prime.

It is not a weakly prime, because it can be changed into another prime (201111215593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555607781 + 100555607782.

It is an arithmetic number, because the mean of its divisors is an integer number (100555607782).

Almost surely, 2^201111215563 is an apocalyptic number.

201111215563 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111215563 is an equidigital number, since it uses as much as digits as its factorization.

201111215563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 201111215563 its reverse (365512111102), we get a palindrome (566623326665).

The spelling of 201111215563 in words is "two hundred one billion, one hundred eleven million, two hundred fifteen thousand, five hundred sixty-three".