21200012102210 has 32 divisors (see below), whose sum is σ = 38206756071792. Its totient is φ = 8469620490240.

The previous prime is 21200012102209. The next prime is 21200012102263. The reversal of 21200012102210 is 1220121000212.

It can be written as a sum of positive squares in 8 ways, for example, as 286960561969 + 20913051540241 = 535687^2 + 4573079^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198670070 + ... + 198776750.

Almost surely, 2^{21200012102210} is an apocalyptic number.

21200012102210 is a deficient number, since it is larger than the sum of its proper divisors (17006743969582).

21200012102210 is a wasteful number, since it uses less digits than its factorization.

21200012102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130838.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21200012102210 its reverse (1220121000212), we get a palindrome (22420133102422).

The spelling of 21200012102210 in words is "twenty-one trillion, two hundred billion, twelve million, one hundred two thousand, two hundred ten".