202102202012201 has 4 divisors (see below), whose sum is σ = 203149363680852. Its totient is φ = 201055040343552.

The previous prime is 202102202012197. The next prime is 202102202012209. The reversal of 202102202012201 is 102210202201202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106244865475225 + 95857336536976 = 10307515^2 + 9790676^2 .

It is a cyclic number.

It is not a de Polignac number, because 202102202012201 - 2² = 202102202012197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202102202012201.

It is not an unprimeable number, because it can be changed into a prime (202102202012209) 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, 523580834036 + ... + 523580834421.

It is an arithmetic number, because the mean of its divisors is an integer number (50787340920213).

Almost surely, 2^{202102202012201} is an apocalyptic number.

It is an amenable number.

202102202012201 is a deficient number, since it is larger than the sum of its proper divisors (1047161668651).

202102202012201 is a wasteful number, since it uses less digits than its factorization.

202102202012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047161668650.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202102202012201 its reverse (102210202201202), we get a palindrome (304312404213403).

The spelling of 202102202012201 in words is "two hundred two trillion, one hundred two billion, two hundred two million, twelve thousand, two hundred one".