21112211102219 has 4 divisors (see below), whose sum is σ = 21162358872480. Its totient is φ = 21062063331960.

The previous prime is 21112211102123. The next prime is 21112211102243. The reversal of 21112211102219 is 91220111221112.

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 21112211102219 - 2²⁰ = 21112210053643 is a prime.

It is a super-2 number, since 2×21112211102219² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112211102419) 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, 25073884499 + ... + 25073885340.

It is an arithmetic number, because the mean of its divisors is an integer number (5290589718120).

Almost surely, 2^{21112211102219} is an apocalyptic number.

21112211102219 is a deficient number, since it is larger than the sum of its proper divisors (50147770261).

21112211102219 is an equidigital number, since it uses as much as digits as its factorization.

21112211102219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50147770260.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 21112211102219 in words is "twenty-one trillion, one hundred twelve billion, two hundred eleven million, one hundred two thousand, two hundred nineteen".