101216590 has 16 divisors (see below), whose sum is σ = 184069872. Its totient is φ = 40068864.

The previous prime is 101216579. The next prime is 101216593. The reversal of 101216590 is 95612101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101216593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51204 + ... + 53143.

It is an arithmetic number, because the mean of its divisors is an integer number (11504367).

Almost surely, 2^101216590 is an apocalyptic number.

101216590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101216590 is a deficient number, since it is larger than the sum of its proper divisors (82853282).

101216590 is a wasteful number, since it uses less digits than its factorization.

101216590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104451.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 101216590 is about 10060.6456055265. The cubic root of 101216590 is about 466.0336047530.

Adding to 101216590 its reverse (95612101), we get a palindrome (196828691).

The spelling of 101216590 in words is "one hundred one million, two hundred sixteen thousand, five hundred ninety".