21013201210 has 16 divisors (see below), whose sum is σ = 37825567776. Its totient is φ = 8404879248.

The previous prime is 21013201207. The next prime is 21013201241. The reversal of 21013201210 is 1210231012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262777 + ... + 333283.

It is an arithmetic number, because the mean of its divisors is an integer number (2364097986).

Almost surely, 2^21013201210 is an apocalyptic number.

21013201210 is a deficient number, since it is larger than the sum of its proper divisors (16812366566).

21013201210 is a wasteful number, since it uses less digits than its factorization.

21013201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100317.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21013201210 its reverse (1210231012), we get a palindrome (22223432222).

The spelling of 21013201210 in words is "twenty-one billion, thirteen million, two hundred one thousand, two hundred ten".