103221587 has 6 divisors (see below), whose sum is σ = 120074148. Its totient is φ = 88475604.

The previous prime is 103221529. The next prime is 103221593. The reversal of 103221587 is 785122301.

It is a de Polignac number, because none of the positive numbers 2^k-103221587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103220587) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1053233 + ... + 1053330.

It is an arithmetic number, because the mean of its divisors is an integer number (20012358).

Almost surely, 2^103221587 is an apocalyptic number.

103221587 is a deficient number, since it is larger than the sum of its proper divisors (16852561).

103221587 is an equidigital number, since it uses as much as digits as its factorization.

103221587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106577 (or 2106570 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 103221587 is about 10159.8025079231. The cubic root of 103221587 is about 469.0907227778.

Adding to 103221587 its reverse (785122301), we get a palindrome (888343888).

The spelling of 103221587 in words is "one hundred three million, two hundred twenty-one thousand, five hundred eighty-seven".