21110012102222 has 16 divisors (see below), whose sum is σ = 33403900899600. Its totient is φ = 9977788563840.

The previous prime is 21110012102219. The next prime is 21110012102233. The reversal of 21110012102222 is 22220121001112.

It is a super-2 number, since 2×21110012102222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21110012102222.

It is a congruent number.

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, 602505947 + ... + 602540982.

It is an arithmetic number, because the mean of its divisors is an integer number (2087743806225).

Almost surely, 2^{21110012102222} is an apocalyptic number.

21110012102222 is a deficient number, since it is larger than the sum of its proper divisors (12293888797378).

21110012102222 is a wasteful number, since it uses less digits than its factorization.

21110012102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205047411.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21110012102222 its reverse (22220121001112), we get a palindrome (43330133103334).

The spelling of 21110012102222 in words is "twenty-one trillion, one hundred ten billion, twelve million, one hundred two thousand, two hundred twenty-two".