21110000112211 has 4 divisors (see below), whose sum is σ = 22351764824712. Its totient is φ = 19868235399712.

The previous prime is 21110000112209. The next prime is 21110000112221. The reversal of 21110000112211 is 11221100001112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21110000112211 - 2¹ = 21110000112209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110000112191 and 21110000112200.

It is not an unprimeable number, because it can be changed into a prime (21110000112221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620882356225 + ... + 620882356258.

It is an arithmetic number, because the mean of its divisors is an integer number (5587941206178).

Almost surely, 2^{21110000112211} is an apocalyptic number.

21110000112211 is a deficient number, since it is larger than the sum of its proper divisors (1241764712501).

21110000112211 is a wasteful number, since it uses less digits than its factorization.

21110000112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241764712500.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21110000112211 its reverse (11221100001112), we get a palindrome (32331100113323).

The spelling of 21110000112211 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve thousand, two hundred eleven".