211330221313201 has 4 divisors (see below), whose sum is σ = 214225155851812. Its totient is φ = 208435286774592.

The previous prime is 211330221313177. The next prime is 211330221313207. The reversal of 211330221313201 is 102313122033112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 171525541594176 + 39804679719025 = 13096776^2 + 6309095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211330221313201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211330221313207) 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 in 3 ways as a sum of consecutive naturals, for example, 1447467269196 + ... + 1447467269341.

It is an arithmetic number, because the mean of its divisors is an integer number (53556288962953).

Almost surely, 2^{211330221313201} is an apocalyptic number.

It is an amenable number.

211330221313201 is a deficient number, since it is larger than the sum of its proper divisors (2894934538611).

211330221313201 is an equidigital number, since it uses as much as digits as its factorization.

211330221313201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894934538610.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 211330221313201 its reverse (102313122033112), we get a palindrome (313643343346313).

The spelling of 211330221313201 in words is "two hundred eleven trillion, three hundred thirty billion, two hundred twenty-one million, three hundred thirteen thousand, two hundred one".