21200110012 has 12 divisors (see below), whose sum is σ = 37103180800. Its totient is φ = 10599201216.

The previous prime is 21200109977. The next prime is 21200110021. The reversal of 21200110012 is 21001100212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155853 + ... + 258244.

Almost surely, 2^21200110012 is an apocalyptic number.

It is an amenable number.

21200110012 is a deficient number, since it is larger than the sum of its proper divisors (15903070788).

21200110012 is a wasteful number, since it uses less digits than its factorization.

21200110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426900 (or 426898 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21200110012 its reverse (21001100212), we get a palindrome (42201210224).

The spelling of 21200110012 in words is "twenty-one billion, two hundred million, one hundred ten thousand, twelve".