1001320223212 has 12 divisors (see below), whose sum is σ = 1752317642880. Its totient is φ = 500658039536.

The previous prime is 1001320223161. The next prime is 1001320223219. The reversal of 1001320223212 is 2123220231001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001320223212.

It is not an unprimeable number, because it can be changed into a prime (1001320223219) 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 3 ways as a sum of consecutive naturals, for example, 1209114 + ... + 1861342.

It is an arithmetic number, because the mean of its divisors is an integer number (146026470240).

Almost surely, 2^{1001320223212} is an apocalyptic number.

It is an amenable number.

1001320223212 is a deficient number, since it is larger than the sum of its proper divisors (750997419668).

1001320223212 is a wasteful number, since it uses less digits than its factorization.

1001320223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036040 (or 1036038 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1001320223212 its reverse (2123220231001), we get a palindrome (3124540454213).

The spelling of 1001320223212 in words is "one trillion, one billion, three hundred twenty million, two hundred twenty-three thousand, two hundred twelve".