210001201097 has 2 divisors, whose sum is σ = 210001201098. Its totient is φ = 210001201096.

The previous prime is 210001201079. The next prime is 210001201103. The reversal of 210001201097 is 790102100012.

Together with previous prime (210001201079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209195549641 + 805651456 = 457379^2 + 28384^2 .

It is a cyclic number.

It is not a de Polignac number, because 210001201097 - 2⁸ = 210001200841 is a prime.

It is not a weakly prime, because it can be changed into another prime (210001209097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000600548 + 105000600549.

It is an arithmetic number, because the mean of its divisors is an integer number (105000600549).

Almost surely, 2^210001201097 is an apocalyptic number.

It is an amenable number.

210001201097 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001201097 is an equidigital number, since it uses as much as digits as its factorization.

210001201097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

The spelling of 210001201097 in words is "two hundred ten billion, one million, two hundred one thousand, ninety-seven".