106003221 has 4 divisors (see below), whose sum is σ = 141337632. Its totient is φ = 70668812.

The previous prime is 106003199. The next prime is 106003231. The reversal of 106003221 is 122300601.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106003221 is a prime.

It is a super-2 number, since 2×106003221² = 22473365724749682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106003231) 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, 17667201 + ... + 17667206.

It is an arithmetic number, because the mean of its divisors is an integer number (35334408).

Almost surely, 2^106003221 is an apocalyptic number.

It is an amenable number.

106003221 is a deficient number, since it is larger than the sum of its proper divisors (35334411).

106003221 is an equidigital number, since it uses as much as digits as its factorization.

106003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35334410.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 106003221 is about 10295.7865653868. The cubic root of 106003221 is about 473.2671427094.

Adding to 106003221 its reverse (122300601), we get a palindrome (228303822).

The spelling of 106003221 in words is "one hundred six million, three thousand, two hundred twenty-one".