1220611 has 8 divisors (see below), whose sum is σ = 1429344. Its totient is φ = 1020480.

The previous prime is 1220599. The next prime is 1220623. The reversal of 1220611 is 1160221.

It is an interprime number because it is at equal distance from previous prime (1220599) and next prime (1220623).

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 1220611 - 2⁹ = 1220099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220591 and 1220600.

It is not an unprimeable number, because it can be changed into a prime (1220411) 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, 1840 + ... + 2413.

It is an arithmetic number, because the mean of its divisors is an integer number (178668).

2^1220611 is an apocalyptic number.

1220611 is a deficient number, since it is larger than the sum of its proper divisors (208733).

1220611 is an equidigital number, since it uses as much as digits as its factorization.

1220611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1220611 is about 1104.8126538015. The cubic root of 1220611 is about 106.8708080615.

Adding to 1220611 its reverse (1160221), we get a palindrome (2380832).

The spelling of 1220611 in words is "one million, two hundred twenty thousand, six hundred eleven".