88810221 has 4 divisors (see below), whose sum is σ = 118413632. Its totient is φ = 59206812.

The previous prime is 88810217. The next prime is 88810231. The reversal of 88810221 is 12201888.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 88810221 - 2² = 88810217 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 (88810231) 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, 14801701 + ... + 14801706.

It is an arithmetic number, because the mean of its divisors is an integer number (29603408).

Almost surely, 2^88810221 is an apocalyptic number.

It is an amenable number.

88810221 is a deficient number, since it is larger than the sum of its proper divisors (29603411).

88810221 is a wasteful number, since it uses less digits than its factorization.

88810221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29603410.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 88810221 is about 9423.9174975166. The cubic root of 88810221 is about 446.1569373372.

The spelling of 88810221 in words is "eighty-eight million, eight hundred ten thousand, two hundred twenty-one".