1321100341001 has 12 divisors (see below), whose sum is σ = 1537327507140. Its totient is φ = 1131975804960.

The previous prime is 1321100340997. The next prime is 1321100341069. The reversal of 1321100341001 is 1001430011231.

It can be written as a sum of positive squares in 2 ways, for example, as 947314836601 + 373785504400 = 973301^2 + 611380^2 .

It is not a de Polignac number, because 1321100341001 - 2² = 1321100340997 is a prime.

It is a super-2 number, since 2×1321100341001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321100341091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4571666 + ... + 4852043.

It is an arithmetic number, because the mean of its divisors is an integer number (128110625595).

Almost surely, 2^{1321100341001} is an apocalyptic number.

It is an amenable number.

1321100341001 is a deficient number, since it is larger than the sum of its proper divisors (216227166139).

1321100341001 is an equidigital number, since it uses as much as digits as its factorization.

1321100341001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9426584 (or 9426577 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1321100341001 its reverse (1001430011231), we get a palindrome (2322530352232).

The spelling of 1321100341001 in words is "one trillion, three hundred twenty-one billion, one hundred million, three hundred forty-one thousand, one".