21301000202 has 4 divisors (see below), whose sum is σ = 31951500306. Its totient is φ = 10650500100.

The previous prime is 21301000183. The next prime is 21301000207. The reversal of 21301000202 is 20200010312.

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 only one way, i.e., 14942373121 + 6358627081 = 122239^2 + 79741^2 .

It is not an unprimeable number, because it can be changed into a prime (21301000207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325250049 + ... + 5325250052.

Almost surely, 2^21301000202 is an apocalyptic number.

21301000202 is a deficient number, since it is larger than the sum of its proper divisors (10650500104).

21301000202 is a wasteful number, since it uses less digits than its factorization.

21301000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650500103.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 21301000202 its reverse (20200010312), we get a palindrome (41501010514).

The spelling of 21301000202 in words is "twenty-one billion, three hundred one million, two hundred two", and thus it is an aban number.