1220299 has 4 divisors (see below), whose sum is σ = 1226880. Its totient is φ = 1213720.

The previous prime is 1220257. The next prime is 1220309. The reversal of 1220299 is 9920221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9920221 = 67 ⋅148063.

It is a cyclic number.

It is not a de Polignac number, because 1220299 - 2⁷ = 1220171 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁵ + 2¹⁷ + 0 + 2¹⁹ + 9³ + 9⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220239) 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, 3004 + ... + 3385.

It is an arithmetic number, because the mean of its divisors is an integer number (306720).

2^1220299 is an apocalyptic number.

1220299 is a deficient number, since it is larger than the sum of its proper divisors (6581).

1220299 is an equidigital number, since it uses as much as digits as its factorization.

1220299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6580.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1220299 is about 1104.6714443671. The cubic root of 1220299 is about 106.8617015475.

The spelling of 1220299 in words is "one million, two hundred twenty thousand, two hundred ninety-nine".