213220855 has 8 divisors (see below), whose sum is σ = 260692992. Its totient is φ = 167358048.

The previous prime is 213220853. The next prime is 213220927. The reversal of 213220855 is 558022312.

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

It is a cyclic number.

It is not a de Polignac number, because 213220855 - 2¹ = 213220853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402039 + ... + 402568.

It is an arithmetic number, because the mean of its divisors is an integer number (32586624).

Almost surely, 2^213220855 is an apocalyptic number.

213220855 is a deficient number, since it is larger than the sum of its proper divisors (47472137).

213220855 is an equidigital number, since it uses as much as digits as its factorization.

213220855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804665.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 213220855 is about 14602.0839266181. The cubic root of 213220855 is about 597.4156017180.

The spelling of 213220855 in words is "two hundred thirteen million, two hundred twenty thousand, eight hundred fifty-five".