10221588 has 36 divisors (see below), whose sum is σ = 27826708. Its totient is φ = 3144960.

The previous prime is 10221571. The next prime is 10221619. The reversal of 10221588 is 88512201.

10221588 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 9809424 = 642^2 + 3132^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×10221588² = 208961722483488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10453 + ... + 11388.

Almost surely, 2^10221588 is an apocalyptic number.

10221588 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

10221588 is an abundant number, since it is smaller than the sum of its proper divisors (17605120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221588 is a wasteful number, since it uses less digits than its factorization.

10221588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21864 (or 21859 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 10221588 is about 3197.1218306471. The cubic root of 10221588 is about 217.0231805742.

Adding to 10221588 its reverse (88512201), we get a palindrome (98733789).

The spelling of 10221588 in words is "ten million, two hundred twenty-one thousand, five hundred eighty-eight".