210021201097 has 4 divisors (see below), whose sum is σ = 214905415120. Its totient is φ = 205136987076.

The previous prime is 210021201077. The next prime is 210021201101. The reversal of 210021201097 is 790102120012.

210021201097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210021201097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021201017) 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, 2442106947 + ... + 2442107032.

It is an arithmetic number, because the mean of its divisors is an integer number (53726353780).

Almost surely, 2^210021201097 is an apocalyptic number.

It is an amenable number.

210021201097 is a deficient number, since it is larger than the sum of its proper divisors (4884214023).

210021201097 is an equidigital number, since it uses as much as digits as its factorization.

210021201097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884214022.

The product of its (nonzero) digits is 504, while the sum is 25.

The spelling of 210021201097 in words is "two hundred ten billion, twenty-one million, two hundred one thousand, ninety-seven".