221212210219 has 32 divisors (see below), whose sum is σ = 306593280000. Its totient is φ = 153980956800.

The previous prime is 221212210213. The next prime is 221212210259. The reversal of 221212210219 is 912012212122.

It is a happy number.

It is not a de Polignac number, because 221212210219 - 2¹³ = 221212202027 is a prime.

It is a super-2 number, since 2×221212210219² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221212210193 and 221212210202.

It is not an unprimeable number, because it can be changed into a prime (221212210213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3533344 + ... + 3595405.

It is an arithmetic number, because the mean of its divisors is an integer number (9581040000).

Almost surely, 2^221212210219 is an apocalyptic number.

221212210219 is a deficient number, since it is larger than the sum of its proper divisors (85381069781).

221212210219 is a wasteful number, since it uses less digits than its factorization.

221212210219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128811.

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

The spelling of 221212210219 in words is "two hundred twenty-one billion, two hundred twelve million, two hundred ten thousand, two hundred nineteen".