21110021102210 has 32 divisors (see below), whose sum is σ = 38513109830400. Its totient is φ = 8329737386880.

The previous prime is 21110021102197. The next prime is 21110021102239. The reversal of 21110021102210 is 1220112001112.

It is a Curzon number.

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, 10942256 + ... + 12726075.

It is an arithmetic number, because the mean of its divisors is an integer number (1203534682200).

Almost surely, 2^{21110021102210} is an apocalyptic number.

21110021102210 is a deficient number, since it is larger than the sum of its proper divisors (17403088728190).

21110021102210 is a wasteful number, since it uses less digits than its factorization.

21110021102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23669546.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110021102210 its reverse (1220112001112), we get a palindrome (22330133103322).

The spelling of 21110021102210 in words is "twenty-one trillion, one hundred ten billion, twenty-one million, one hundred two thousand, two hundred ten".