102001020201 has 32 divisors (see below), whose sum is σ = 156301367040. Its totient is φ = 65697955200.

The previous prime is 102001020181. The next prime is 102001020263. The reversal of 102001020201 is 102020100201.

It is not a de Polignac number, because 102001020201 - 2¹⁰ = 102001019177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (102001020271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333270 + ... + 561311.

It is an arithmetic number, because the mean of its divisors is an integer number (4884417720).

Almost surely, 2^102001020201 is an apocalyptic number.

It is an amenable number.

102001020201 is a deficient number, since it is larger than the sum of its proper divisors (54300346839).

102001020201 is a wasteful number, since it uses less digits than its factorization.

102001020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894734 (or 894728 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102001020201 its reverse (102020100201), we get a palindrome (204021120402).

The spelling of 102001020201 in words is "one hundred two billion, one million, twenty thousand, two hundred one".