201611201033251 has 2 divisors, whose sum is σ = 201611201033252. Its totient is φ = 201611201033250.

The previous prime is 201611201033197. The next prime is 201611201033269. The reversal of 201611201033251 is 152330102116102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201611201033251 - 2²³ = 201611192644643 is a prime.

It is not a weakly prime, because it can be changed into another prime (201611201033651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100805600516625 + 100805600516626.

It is an arithmetic number, because the mean of its divisors is an integer number (100805600516626).

Almost surely, 2^{201611201033251} is an apocalyptic number.

201611201033251 is a deficient number, since it is larger than the sum of its proper divisors (1).

201611201033251 is an equidigital number, since it uses as much as digits as its factorization.

201611201033251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 201611201033251 its reverse (152330102116102), we get a palindrome (353941303149353).

The spelling of 201611201033251 in words is "two hundred one trillion, six hundred eleven billion, two hundred one million, thirty-three thousand, two hundred fifty-one".