21001112200010 has 8 divisors (see below), whose sum is σ = 37802001960036. Its totient is φ = 8400444880000.

The previous prime is 21001112199937. The next prime is 21001112200049. The reversal of 21001112200010 is 1000221110012.

It can be written as a sum of positive squares in 2 ways, for example, as 19449784656481 + 1551327543529 = 4410191^2 + 1245523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21001112199964 and 21001112200000.

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, 1050055609991 + ... + 1050055610010.

Almost surely, 2^{21001112200010} is an apocalyptic number.

21001112200010 is a deficient number, since it is larger than the sum of its proper divisors (16800889760026).

21001112200010 is a wasteful number, since it uses less digits than its factorization.

21001112200010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100111220008.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21001112200010 its reverse (1000221110012), we get a palindrome (22001333310022).

The spelling of 21001112200010 in words is "twenty-one trillion, one billion, one hundred twelve million, two hundred thousand, ten".