213220907 has 8 divisors (see below), whose sum is σ = 224577600. Its totient is φ = 201877704.

The previous prime is 213220853. The next prime is 213220927. The reversal of 213220907 is 709022312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213220907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213220927) 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 7 ways as a sum of consecutive naturals, for example, 56444 + ... + 60102.

It is an arithmetic number, because the mean of its divisors is an integer number (28072200).

Almost surely, 2^213220907 is an apocalyptic number.

213220907 is a deficient number, since it is larger than the sum of its proper divisors (11356693).

213220907 is a wasteful number, since it uses less digits than its factorization.

213220907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6745.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 213220907 is about 14602.0857071858. The cubic root of 213220907 is about 597.4156502836.

The spelling of 213220907 in words is "two hundred thirteen million, two hundred twenty thousand, nine hundred seven".