1321122001042 has 8 divisors (see below), whose sum is σ = 2014169608332. Its totient is φ = 649732131600.

The previous prime is 1321122000997. The next prime is 1321122001049. The reversal of 1321122001042 is 2401002211231.

It can be written as a sum of positive squares in 2 ways, for example, as 1029350255761 + 291771745281 = 1014569^2 + 540159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1321122001049) by changing a digit.

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, 5414434309 + ... + 5414434552.

Almost surely, 2^{1321122001042} is an apocalyptic number.

1321122001042 is a deficient number, since it is larger than the sum of its proper divisors (693047607290).

1321122001042 is a wasteful number, since it uses less digits than its factorization.

1321122001042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10828868924.

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

Adding to 1321122001042 its reverse (2401002211231), we get a palindrome (3722124212273).

The spelling of 1321122001042 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-two million, one thousand, forty-two".