21100222000012 has 48 divisors (see below), whose sum is σ = 37509110956800. Its totient is φ = 10384983628992.

The previous prime is 21100222000003. The next prime is 21100222000037. The reversal of 21100222000012 is 21000022200112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21100221999956 and 21100222000001.

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, 33397393 + ... + 34023319.

It is an arithmetic number, because the mean of its divisors is an integer number (781439811600).

Almost surely, 2^{21100222000012} is an apocalyptic number.

It is an amenable number.

21100222000012 is a deficient number, since it is larger than the sum of its proper divisors (16408888956788).

21100222000012 is a wasteful number, since it uses less digits than its factorization.

21100222000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626590 (or 626588 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21100222000012 its reverse (21000022200112), we get a palindrome (42100244200124).

The spelling of 21100222000012 in words is "twenty-one trillion, one hundred billion, two hundred twenty-two million, twelve", and thus it is an aban number.