200102130232021 has 4 divisors (see below), whose sum is σ = 202165038791212. Its totient is φ = 198039221672832.

The previous prime is 200102130232007. The next prime is 200102130232051. The reversal of 200102130232021 is 120232031201002.

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 82762432032996 + 117339698199025 = 9097386^2 + 10832345^2 .

It is a cyclic number.

It is not a de Polignac number, because 200102130232021 - 2³¹ = 200099982748373 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 200102130232021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200102130232001) 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, 1031454279450 + ... + 1031454279643.

It is an arithmetic number, because the mean of its divisors is an integer number (50541259697803).

Almost surely, 2^{200102130232021} is an apocalyptic number.

It is an amenable number.

200102130232021 is a deficient number, since it is larger than the sum of its proper divisors (2062908559191).

200102130232021 is an equidigital number, since it uses as much as digits as its factorization.

200102130232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062908559190.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 200102130232021 its reverse (120232031201002), we get a palindrome (320334161433023).

The spelling of 200102130232021 in words is "two hundred trillion, one hundred two billion, one hundred thirty million, two hundred thirty-two thousand, twenty-one".