21200220220012 has 6 divisors (see below), whose sum is σ = 37100385385028. Its totient is φ = 10600110110004.

The previous prime is 21200220219907. The next prime is 21200220220057. The reversal of 21200220220012 is 21002202200212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2650027527498 + ... + 2650027527505.

Almost surely, 2^{21200220220012} is an apocalyptic number.

It is an amenable number.

21200220220012 is a deficient number, since it is larger than the sum of its proper divisors (15900165165016).

21200220220012 is a wasteful number, since it uses less digits than its factorization.

21200220220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300055055007 (or 5300055055005 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21200220220012 its reverse (21002202200212), we get a palindrome (42202422420224).

The spelling of 21200220220012 in words is "twenty-one trillion, two hundred billion, two hundred twenty million, two hundred twenty thousand, twelve".