1321120446 has 32 divisors (see below), whose sum is σ = 2719277568. Its totient is φ = 427583520.

The previous prime is 1321120441. The next prime is 1321120447. The reversal of 1321120446 is 6440211231.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321120441) 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, 105751 + ... + 117581.

It is an arithmetic number, because the mean of its divisors is an integer number (84977424).

Almost surely, 2^1321120446 is an apocalyptic number.

1321120446 is an abundant number, since it is smaller than the sum of its proper divisors (1398157122).

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

1321120446 is a wasteful number, since it uses less digits than its factorization.

1321120446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12376.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1321120446 is about 36347.2206090094. The cubic root of 1321120446 is about 1097.2715979405.

Adding to 1321120446 its reverse (6440211231), we get a palindrome (7761331677).

The spelling of 1321120446 in words is "one billion, three hundred twenty-one million, one hundred twenty thousand, four hundred forty-six".