201042281897 has 2 divisors, whose sum is σ = 201042281898. Its totient is φ = 201042281896.

The previous prime is 201042281863. The next prime is 201042281899. The reversal of 201042281897 is 798182240102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159731312896 + 41310969001 = 399664^2 + 203251^2 .

It is a cyclic number.

It is not a de Polignac number, because 201042281897 - 2¹² = 201042277801 is a prime.

It is a super-2 number, since 2×201042281897² (a number of 23 digits) contains 22 as substring.

Together with 201042281899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201042281899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100521140948 + 100521140949.

It is an arithmetic number, because the mean of its divisors is an integer number (100521140949).

Almost surely, 2^201042281897 is an apocalyptic number.

It is an amenable number.

201042281897 is a deficient number, since it is larger than the sum of its proper divisors (1).

201042281897 is an equidigital number, since it uses as much as digits as its factorization.

201042281897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 201042281897 in words is "two hundred one billion, forty-two million, two hundred eighty-one thousand, eight hundred ninety-seven".