1320121230 has 32 divisors (see below), whose sum is σ = 3354662304. Its totient is φ = 331324416.

The previous prime is 1320121223. The next prime is 1320121237. The reversal of 1320121230 is 321210231.

It is an interprime number because it is at equal distance from previous prime (1320121223) and next prime (1320121237).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320121237) 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, 1293727 + ... + 1294746.

It is an arithmetic number, because the mean of its divisors is an integer number (104833197).

Almost surely, 2^1320121230 is an apocalyptic number.

1320121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320121230 is an abundant number, since it is smaller than the sum of its proper divisors (2034541074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320121230 is a wasteful number, since it uses less digits than its factorization.

1320121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588500.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1320121230 is about 36333.4725838310. The cubic root of 1320121230 is about 1096.9948914332.

Adding to 1320121230 its reverse (321210231), we get a palindrome (1641331461).

The spelling of 1320121230 in words is "one billion, three hundred twenty million, one hundred twenty-one thousand, two hundred thirty".