219012213 has 48 divisors (see below), whose sum is σ = 354669504. Its totient is φ = 119750400.

The previous prime is 219012203. The next prime is 219012217. The reversal of 219012213 is 312210912.

It is not a de Polignac number, because 219012213 - 2⁴ = 219012197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 219012213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219012217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 364113 + ... + 364713.

It is an arithmetic number, because the mean of its divisors is an integer number (7388948).

Almost surely, 2^219012213 is an apocalyptic number.

It is an amenable number.

219012213 is a deficient number, since it is larger than the sum of its proper divisors (135657291).

219012213 is a wasteful number, since it uses less digits than its factorization.

219012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 219012213 is about 14799.0612202261. The cubic root of 219012213 is about 602.7762206303.

The spelling of 219012213 in words is "two hundred nineteen million, twelve thousand, two hundred thirteen".