21101101212219 has 16 divisors (see below), whose sum is σ = 32157447141120. Its totient is φ = 12056501564640.

The previous prime is 21101101212187. The next prime is 21101101212241. The reversal of 21101101212219 is 91221210110112.

It is not a de Polignac number, because 21101101212219 - 2⁵ = 21101101212187 is a prime.

It is a super-2 number, since 2×21101101212219² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21101101212019) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 52735804 + ... + 53134425.

It is an arithmetic number, because the mean of its divisors is an integer number (2009840446320).

Almost surely, 2^{21101101212219} is an apocalyptic number.

21101101212219 is a deficient number, since it is larger than the sum of its proper divisors (11056345928901).

21101101212219 is a wasteful number, since it uses less digits than its factorization.

21101101212219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105879730.

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 21101101212219 in words is "twenty-one trillion, one hundred one billion, one hundred one million, two hundred twelve thousand, two hundred nineteen".