21211110012110 has 32 divisors (see below), whose sum is σ = 38901570561792. Its totient is φ = 8324104389120.

The previous prime is 21211110012107. The next prime is 21211110012137. The reversal of 21211110012110 is 1121001111212.

It is a super-2 number, since 2×21211110012110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17134115 + ... + 18330305.

It is an arithmetic number, because the mean of its divisors is an integer number (1215674080056).

Almost surely, 2^{21211110012110} is an apocalyptic number.

21211110012110 is a deficient number, since it is larger than the sum of its proper divisors (17690460549682).

21211110012110 is a wasteful number, since it uses less digits than its factorization.

21211110012110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229708.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21211110012110 its reverse (1121001111212), we get a palindrome (22332111123322).

The spelling of 21211110012110 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, twelve thousand, one hundred ten".