88218221 has 8 divisors (see below), whose sum is σ = 108576384. Its totient is φ = 69798960.

The previous prime is 88218209. The next prime is 88218233. The reversal of 88218221 is 12281288.

It is an interprime number because it is at equal distance from previous prime (88218209) and next prime (88218233).

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

It is not a de Polignac number, because 88218221 - 2¹⁴ = 88201837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88218421) 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, 484625 + ... + 484806.

It is an arithmetic number, because the mean of its divisors is an integer number (13572048).

Almost surely, 2^88218221 is an apocalyptic number.

It is an amenable number.

88218221 is a deficient number, since it is larger than the sum of its proper divisors (20358163).

88218221 is a wasteful number, since it uses less digits than its factorization.

88218221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969451.

The product of its digits is 4096, while the sum is 32.

The square root of 88218221 is about 9392.4555362269. The cubic root of 88218221 is about 445.1633806509.

The spelling of 88218221 in words is "eighty-eight million, two hundred eighteen thousand, two hundred twenty-one".