21211101100010 has 8 divisors (see below), whose sum is σ = 38179981980036. Its totient is φ = 8484440440000.

The previous prime is 21211101099997. The next prime is 21211101100027. The reversal of 21211101100010 is 1000110111212.

It can be written as a sum of positive squares in 2 ways, for example, as 20562243462721 + 648857637289 = 4534561^2 + 805517^2 .

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 = 21211101099964 and 21211101100000.

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, 1060555054991 + ... + 1060555055010.

Almost surely, 2^{21211101100010} is an apocalyptic number.

21211101100010 is a deficient number, since it is larger than the sum of its proper divisors (16968880880026).

21211101100010 is a wasteful number, since it uses less digits than its factorization.

21211101100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121110110008.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 21211101100010 its reverse (1000110111212), we get a palindrome (22211211211222).

The spelling of 21211101100010 in words is "twenty-one trillion, two hundred eleven billion, one hundred one million, one hundred thousand, ten".