1213444231001 has 2 divisors, whose sum is σ = 1213444231002. Its totient is φ = 1213444231000.

The previous prime is 1213444230961. The next prime is 1213444231031. The reversal of 1213444231001 is 1001324443121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999930001225 + 213514229776 = 999965^2 + 462076^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213444231001 - 2¹⁸ = 1213443968857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1213444231031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606722115500 + 606722115501.

It is an arithmetic number, because the mean of its divisors is an integer number (606722115501).

Almost surely, 2^{1213444231001} is an apocalyptic number.

It is an amenable number.

1213444231001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213444231001 is an equidigital number, since it uses as much as digits as its factorization.

1213444231001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1213444231001 its reverse (1001324443121), we get a palindrome (2214768674122).

The spelling of 1213444231001 in words is "one trillion, two hundred thirteen billion, four hundred forty-four million, two hundred thirty-one thousand, one".