21202100202 has 8 divisors (see below), whose sum is σ = 42404200416. Its totient is φ = 7067366732.

The previous prime is 21202100197. The next prime is 21202100207. The reversal of 21202100202 is 20200120212.

It is an interprime number because it is at equal distance from previous prime (21202100197) and next prime (21202100207).

It is a sphenic number, since it is the product of 3 distinct primes.

21202100202 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21202100207) 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, 1766841678 + ... + 1766841689.

It is an arithmetic number, because the mean of its divisors is an integer number (5300525052).

Almost surely, 2^21202100202 is an apocalyptic number.

21202100202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21202100202 is a wasteful number, since it uses less digits than its factorization.

21202100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533683372.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21202100202 its reverse (20200120212), we get a palindrome (41402220414).

The spelling of 21202100202 in words is "twenty-one billion, two hundred two million, one hundred thousand, two hundred two".