102002012201 has 4 divisors (see below), whose sum is σ = 102005070804. Its totient is φ = 101998953600.

The previous prime is 102002012197. The next prime is 102002012207. The reversal of 102002012201 is 102210200201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102210200201 = 1087 ⋅94029623.

It can be written as a sum of positive squares in 2 ways, for example, as 18062016025 + 83939996176 = 134395^2 + 289724^2 .

It is a cyclic number.

It is not a de Polignac number, because 102002012201 - 2² = 102002012197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102002012207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478720 + ... + 1546161.

It is an arithmetic number, because the mean of its divisors is an integer number (25501267701).

Almost surely, 2^102002012201 is an apocalyptic number.

It is an amenable number.

102002012201 is a deficient number, since it is larger than the sum of its proper divisors (3058603).

102002012201 is an equidigital number, since it uses as much as digits as its factorization.

102002012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058602.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102002012201 its reverse (102210200201), we get a palindrome (204212212402).

The spelling of 102002012201 in words is "one hundred two billion, two million, twelve thousand, two hundred one".