219221452 has 6 divisors (see below), whose sum is σ = 383637548. Its totient is φ = 109610724.

The previous prime is 219221447. The next prime is 219221459. The reversal of 219221452 is 254122912.

It is a self number, because there is not a number n which added to its sum of digits gives 219221452.

It is not an unprimeable number, because it can be changed into a prime (219221459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27402678 + ... + 27402685.

Almost surely, 2^219221452 is an apocalyptic number.

It is an amenable number.

219221452 is a deficient number, since it is larger than the sum of its proper divisors (164416096).

219221452 is a wasteful number, since it uses less digits than its factorization.

219221452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54805367 (or 54805365 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 219221452 is about 14806.1288661149. The cubic root of 219221452 is about 602.9681188322.

The spelling of 219221452 in words is "two hundred nineteen million, two hundred twenty-one thousand, four hundred fifty-two".