221022211219 has 4 divisors (see below), whose sum is σ = 228151960000. Its totient is φ = 213892462440.

The previous prime is 221022211133. The next prime is 221022211237. The reversal of 221022211219 is 912112220122.

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 221022211219 - 2¹¹ = 221022209171 is a prime.

It is a super-2 number, since 2×221022211219² (a number of 23 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 = 221022211193 and 221022211202.

It is not an unprimeable number, because it can be changed into a prime (221022211519) 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, 3564874344 + ... + 3564874405.

It is an arithmetic number, because the mean of its divisors is an integer number (57037990000).

Almost surely, 2^221022211219 is an apocalyptic number.

221022211219 is a deficient number, since it is larger than the sum of its proper divisors (7129748781).

221022211219 is an equidigital number, since it uses as much as digits as its factorization.

221022211219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129748780.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 221022211219 in words is "two hundred twenty-one billion, twenty-two million, two hundred eleven thousand, two hundred nineteen".