21110000212186 has 32 divisors (see below), whose sum is σ = 33066507369600. Its totient is φ = 10088520938496.

The previous prime is 21110000212061. The next prime is 21110000212187. The reversal of 21110000212186 is 68121200001112.

It is a self number, because there is not a number n which added to its sum of digits gives 21110000212186.

It is not an unprimeable number, because it can be changed into a prime (21110000212187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665935765 + ... + 665967463.

It is an arithmetic number, because the mean of its divisors is an integer number (1033328355300).

Almost surely, 2^{21110000212186} is an apocalyptic number.

21110000212186 is a deficient number, since it is larger than the sum of its proper divisors (11956507157414).

21110000212186 is a wasteful number, since it uses less digits than its factorization.

21110000212186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42118.

The product of its (nonzero) digits is 384, while the sum is 25.

Adding to 21110000212186 its reverse (68121200001112), we get a palindrome (89231200213298).

The spelling of 21110000212186 in words is "twenty-one trillion, one hundred ten billion, two hundred twelve thousand, one hundred eighty-six".