21020230202 has 16 divisors (see below), whose sum is σ = 32572218624. Its totient is φ = 10163340000.

The previous prime is 21020230141. The next prime is 21020230211. The reversal of 21020230202 is 20203202012.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 46424 + ... + 210227.

It is an arithmetic number, because the mean of its divisors is an integer number (2035763664).

Almost surely, 2^21020230202 is an apocalyptic number.

21020230202 is a deficient number, since it is larger than the sum of its proper divisors (11551988422).

21020230202 is a wasteful number, since it uses less digits than its factorization.

21020230202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258005.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 21020230202 its reverse (20203202012), we get a palindrome (41223432214).

The spelling of 21020230202 in words is "twenty-one billion, twenty million, two hundred thirty thousand, two hundred two".