1320021241 has 24 divisors (see below), whose sum is σ = 1678453920. Its totient is φ = 1026547200.

The previous prime is 1320021169. The next prime is 1320021289. The reversal of 1320021241 is 1421200231.

It is not a de Polignac number, because 1320021241 - 2⁹ = 1320020729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320021341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305625 + ... + 309913.

It is an arithmetic number, because the mean of its divisors is an integer number (69935580).

Almost surely, 2^1320021241 is an apocalyptic number.

1320021241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1320021241 is a deficient number, since it is larger than the sum of its proper divisors (358432679).

1320021241 is a wasteful number, since it uses less digits than its factorization.

1320021241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885 (or 4878 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1320021241 is about 36332.0965676356. The cubic root of 1320021241 is about 1096.9671944335.

Adding to 1320021241 its reverse (1421200231), we get a palindrome (2741221472).

The spelling of 1320021241 in words is "one billion, three hundred twenty million, twenty-one thousand, two hundred forty-one".