1321144012 has 12 divisors (see below), whose sum is σ = 2412524016. Its totient is φ = 631851440.

The previous prime is 1321143979. The next prime is 1321144049. The reversal of 1321144012 is 2104411231.

It is a super-2 number, since 2×1321144012² = 3490843000886912288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7180039 + ... + 7180222.

It is an arithmetic number, because the mean of its divisors is an integer number (201043668).

Almost surely, 2^1321144012 is an apocalyptic number.

It is an amenable number.

1321144012 is a deficient number, since it is larger than the sum of its proper divisors (1091380004).

1321144012 is a wasteful number, since it uses less digits than its factorization.

1321144012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14360288 (or 14360286 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1321144012 is about 36347.5447864089. The cubic root of 1321144012 is about 1097.2781222381.

Adding to 1321144012 its reverse (2104411231), we get a palindrome (3425555243).

The spelling of 1321144012 in words is "one billion, three hundred twenty-one million, one hundred forty-four thousand, twelve".