21120100200210 has 64 divisors (see below), whose sum is σ = 55699884814464. Its totient is φ = 5082651840000.

The previous prime is 21120100200187. The next prime is 21120100200229. The reversal of 21120100200210 is 1200200102112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233532541 + ... + 233622960.

It is an arithmetic number, because the mean of its divisors is an integer number (870310700226).

Almost surely, 2^{21120100200210} is an apocalyptic number.

21120100200210 is an abundant number, since it is smaller than the sum of its proper divisors (34579784614254).

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

21120100200210 is a wasteful number, since it uses less digits than its factorization.

21120100200210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467155659.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21120100200210 its reverse (1200200102112), we get a palindrome (22320300302322).

The spelling of 21120100200210 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, two hundred thousand, two hundred ten".