21220110020012 has 12 divisors (see below), whose sum is σ = 37157075394600. Its totient is φ = 10603802764416.

The previous prime is 21220110019949. The next prime is 21220110020033. The reversal of 21220110020012 is 21002001102212.

It is a super-2 number, since 2×21220110020012² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1563053762 + ... + 1563067337.

It is an arithmetic number, because the mean of its divisors is an integer number (3096422949550).

Almost surely, 2^{21220110020012} is an apocalyptic number.

It is an amenable number.

21220110020012 is a deficient number, since it is larger than the sum of its proper divisors (15936965374588).

21220110020012 is a wasteful number, since it uses less digits than its factorization.

21220110020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126122800 (or 3126122798 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21220110020012 its reverse (21002001102212), we get a palindrome (42222111122224).

The spelling of 21220110020012 in words is "twenty-one trillion, two hundred twenty billion, one hundred ten million, twenty thousand, twelve".