103651221 has 8 divisors (see below), whose sum is σ = 139493664. Its totient is φ = 68454800.

The previous prime is 103651217. The next prime is 103651291. The reversal of 103651221 is 122156301.

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

It is a cyclic number.

It is not a de Polignac number, because 103651221 - 2² = 103651217 is a prime.

It is a super-2 number, since 2×103651221² = 21487151229581682, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103651291) 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, 161130 + ... + 161771.

It is an arithmetic number, because the mean of its divisors is an integer number (17436708).

Almost surely, 2^103651221 is an apocalyptic number.

It is an amenable number.

103651221 is a deficient number, since it is larger than the sum of its proper divisors (35842443).

103651221 is a wasteful number, since it uses less digits than its factorization.

103651221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323011.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 103651221 is about 10180.9243686416. The cubic root of 103651221 is about 469.7406461062.

The spelling of 103651221 in words is "one hundred three million, six hundred fifty-one thousand, two hundred twenty-one".