1320220499 has 16 divisors (see below), whose sum is σ = 1456573440. Its totient is φ = 1189157760.

The previous prime is 1320220481. The next prime is 1320220523. The reversal of 1320220499 is 9940220231.

It is a cyclic number.

It is not a de Polignac number, because 1320220499 - 2⁸ = 1320220243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320220409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94157 + ... + 107265.

It is an arithmetic number, because the mean of its divisors is an integer number (91035840).

Almost surely, 2^1320220499 is an apocalyptic number.

1320220499 is a deficient number, since it is larger than the sum of its proper divisors (136352941).

1320220499 is a wasteful number, since it uses less digits than its factorization.

1320220499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13310.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1320220499 is about 36334.8386400710. The cubic root of 1320220499 is about 1097.0223876090.

The spelling of 1320220499 in words is "one billion, three hundred twenty million, two hundred twenty thousand, four hundred ninety-nine".