21301020202 has 48 divisors (see below), whose sum is σ = 41945260320. Its totient is φ = 8012911200.

The previous prime is 21301020161. The next prime is 21301020211. The reversal of 21301020202 is 20202010312.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309424 + ... + 371947.

It is an arithmetic number, because the mean of its divisors is an integer number (873859590).

Almost surely, 2^21301020202 is an apocalyptic number.

21301020202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21301020202 is a deficient number, since it is larger than the sum of its proper divisors (20644240118).

21301020202 is a wasteful number, since it uses less digits than its factorization.

21301020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681427 (or 681420 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21301020202 its reverse (20202010312), we get a palindrome (41503030514).

The spelling of 21301020202 in words is "twenty-one billion, three hundred one million, twenty thousand, two hundred two".