201121203827 has 2 divisors, whose sum is σ = 201121203828. Its totient is φ = 201121203826.

The previous prime is 201121203809. The next prime is 201121203889. The reversal of 201121203827 is 728302121102.

201121203827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201121203827 - 2⁶ = 201121203763 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201121203827.

It is not a weakly prime, because it can be changed into another prime (201421203827) 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, 100560601913 + 100560601914.

It is an arithmetic number, because the mean of its divisors is an integer number (100560601914).

Almost surely, 2^201121203827 is an apocalyptic number.

201121203827 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121203827 is an equidigital number, since it uses as much as digits as its factorization.

201121203827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 201121203827 its reverse (728302121102), we get a palindrome (929423324929).

The spelling of 201121203827 in words is "two hundred one billion, one hundred twenty-one million, two hundred three thousand, eight hundred twenty-seven".