1223131012 has 12 divisors (see below), whose sum is σ = 2144285136. Its totient is φ = 610478120.

The previous prime is 1223130991. The next prime is 1223131081. The reversal of 1223131012 is 2101313221.

It is a super-2 number, since 2×1223131012² = 2992098945032288288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269314 + ... + 273817.

It is an arithmetic number, because the mean of its divisors is an integer number (178690428).

Almost surely, 2^1223131012 is an apocalyptic number.

It is an amenable number.

1223131012 is a deficient number, since it is larger than the sum of its proper divisors (921154124).

1223131012 is a wasteful number, since it uses less digits than its factorization.

1223131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543698 (or 543696 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1223131012 is about 34973.2899796402. The cubic root of 1223131012 is about 1069.4430420193.

Adding to 1223131012 its reverse (2101313221), we get a palindrome (3324444233).

The spelling of 1223131012 in words is "one billion, two hundred twenty-three million, one hundred thirty-one thousand, twelve".