21220210220012 has 6 divisors (see below), whose sum is σ = 37135367885028. Its totient is φ = 10610105110004.

The previous prime is 21220210219993. The next prime is 21220210220039. The reversal of 21220210220012 is 21002201202212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2652526277498 + ... + 2652526277505.

It is an arithmetic number, because the mean of its divisors is an integer number (6189227980838).

Almost surely, 2^{21220210220012} is an apocalyptic number.

It is an amenable number.

21220210220012 is a deficient number, since it is larger than the sum of its proper divisors (15915157665016).

21220210220012 is a wasteful number, since it uses less digits than its factorization.

21220210220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305052555007 (or 5305052555005 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21220210220012 its reverse (21002201202212), we get a palindrome (42222411422224).

The spelling of 21220210220012 in words is "twenty-one trillion, two hundred twenty billion, two hundred ten million, two hundred twenty thousand, twelve".