1107221 has 4 divisors (see below), whose sum is σ = 1109472. Its totient is φ = 1104972.

The previous prime is 1107217. The next prime is 1107269. The reversal of 1107221 is 1227011.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1227011 = 31 ⋅39581.

It is a cyclic number.

It is not a de Polignac number, because 1107221 - 2² = 1107217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1107196 and 1107205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1107721) 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, 35 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (277368).

2^1107221 is an apocalyptic number.

It is an amenable number.

1107221 is a deficient number, since it is larger than the sum of its proper divisors (2251).

1107221 is an equidigital number, since it uses as much as digits as its factorization.

1107221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 1107221 is about 1052.2456937427. The cubic root of 1107221 is about 103.4534007282.

The spelling of 1107221 in words is "one million, one hundred seven thousand, two hundred twenty-one".