21112201012219 has 4 divisors (see below), whose sum is σ = 21329852569144. Its totient is φ = 20894549455296.

The previous prime is 21112201012169. The next prime is 21112201012249. The reversal of 21112201012219 is 91221010221112.

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 21112201012219 - 2³⁹ = 20562445198331 is a prime.

It is a super-2 number, since 2×21112201012219² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21112201012193 and 21112201012202.

It is not an unprimeable number, because it can be changed into a prime (21112201012249) 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, 108825778317 + ... + 108825778510.

It is an arithmetic number, because the mean of its divisors is an integer number (5332463142286).

Almost surely, 2^{21112201012219} is an apocalyptic number.

21112201012219 is a deficient number, since it is larger than the sum of its proper divisors (217651556925).

21112201012219 is an equidigital number, since it uses as much as digits as its factorization.

21112201012219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217651556924.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 21112201012219 in words is "twenty-one trillion, one hundred twelve billion, two hundred one million, twelve thousand, two hundred nineteen".