219212149 has 16 divisors (see below), whose sum is σ = 246927744. Its totient is φ = 193089600.

The previous prime is 219212137. The next prime is 219212159. The reversal of 219212149 is 941212912.

It is a happy number.

219212149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 219212149 - 2⁹ = 219211637 is a prime.

It is a super-3 number, since 3×219212149³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 219212149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219212159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206079 + ... + 207139.

It is an arithmetic number, because the mean of its divisors is an integer number (15432984).

Almost surely, 2^219212149 is an apocalyptic number.

It is an amenable number.

219212149 is a deficient number, since it is larger than the sum of its proper divisors (27715595).

219212149 is a wasteful number, since it uses less digits than its factorization.

219212149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788.

The product of its digits is 2592, while the sum is 31.

The square root of 219212149 is about 14805.8147023391. The cubic root of 219212149 is about 602.9595894179.

It can be divided in two parts, 2192 and 12149, that added together give a palindrome (14341).

The spelling of 219212149 in words is "two hundred nineteen million, two hundred twelve thousand, one hundred forty-nine".