201328214981 has 2 divisors, whose sum is σ = 201328214982. Its totient is φ = 201328214980.

The previous prime is 201328214953. The next prime is 201328215007. The reversal of 201328214981 is 189412823102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165136576900 + 36191638081 = 406370^2 + 190241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201328214981 is a prime.

It is a super-2 number, since 2×201328214981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201328214921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100664107490 + 100664107491.

It is an arithmetic number, because the mean of its divisors is an integer number (100664107491).

Almost surely, 2^201328214981 is an apocalyptic number.

It is an amenable number.

201328214981 is a deficient number, since it is larger than the sum of its proper divisors (1).

201328214981 is an equidigital number, since it uses as much as digits as its factorization.

201328214981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 201328214981 in words is "two hundred one billion, three hundred twenty-eight million, two hundred fourteen thousand, nine hundred eighty-one".