1320222011 has 16 divisors (see below), whose sum is σ = 1452230400. Its totient is φ = 1194624288.

The previous prime is 1320221999. The next prime is 1320222031. The reversal of 1320222011 is 1102220231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1320222011 - 2²² = 1316027707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320222031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373625 + ... + 377141.

It is an arithmetic number, because the mean of its divisors is an integer number (90764400).

Almost surely, 2^1320222011 is an apocalyptic number.

1320222011 is a deficient number, since it is larger than the sum of its proper divisors (132008389).

1320222011 is a wasteful number, since it uses less digits than its factorization.

1320222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4418.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1320222011 is about 36334.8594465425. The cubic root of 1320222011 is about 1097.0228064020.

Adding to 1320222011 its reverse (1102220231), we get a palindrome (2422442242).

The spelling of 1320222011 in words is "one billion, three hundred twenty million, two hundred twenty-two thousand, eleven".