219105212 has 12 divisors (see below), whose sum is σ = 383620776. Its totient is φ = 109499280.

The previous prime is 219105191. The next prime is 219105217. The reversal of 219105212 is 212501912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219105217) 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, 3239 + ... + 21182.

It is an arithmetic number, because the mean of its divisors is an integer number (31968398).

Almost surely, 2^219105212 is an apocalyptic number.

It is an amenable number.

219105212 is a deficient number, since it is larger than the sum of its proper divisors (164515564).

219105212 is a wasteful number, since it uses less digits than its factorization.

219105212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26668 (or 26666 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 219105212 is about 14802.2029441567. The cubic root of 219105212 is about 602.8615273693.

The spelling of 219105212 in words is "two hundred nineteen million, one hundred five thousand, two hundred twelve".