10211020199957 has 2 divisors, whose sum is σ = 10211020199958. Its totient is φ = 10211020199956.

The previous prime is 10211020199881. The next prime is 10211020200061. The reversal of 10211020199957 is 75999102011201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5605880170276 + 4605140029681 = 2367674^2 + 2145959^2 .

It is an emirp because it is prime and its reverse (75999102011201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10211020199957 - 2¹² = 10211020195861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211020199857) 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, 5105510099978 + 5105510099979.

It is an arithmetic number, because the mean of its divisors is an integer number (5105510099979).

Almost surely, 2^{10211020199957} is an apocalyptic number.

It is an amenable number.

10211020199957 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211020199957 is an equidigital number, since it uses as much as digits as its factorization.

10211020199957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 47.

The spelling of 10211020199957 in words is "ten trillion, two hundred eleven billion, twenty million, one hundred ninety-nine thousand, nine hundred fifty-seven".