201121968353 has 2 divisors, whose sum is σ = 201121968354. Its totient is φ = 201121968352.

The previous prime is 201121968337. The next prime is 201121968367. The reversal of 201121968353 is 353869121102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200890411264 + 231557089 = 448208^2 + 15217^2 .

It is a cyclic number.

It is not a de Polignac number, because 201121968353 - 2⁴ = 201121968337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201121968353.

It is not a weakly prime, because it can be changed into another prime (201121968253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560984176 + 100560984177.

It is an arithmetic number, because the mean of its divisors is an integer number (100560984177).

Almost surely, 2^201121968353 is an apocalyptic number.

It is an amenable number.

201121968353 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121968353 is an equidigital number, since it uses as much as digits as its factorization.

201121968353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 201121968353 in words is "two hundred one billion, one hundred twenty-one million, nine hundred sixty-eight thousand, three hundred fifty-three".