1211444441201 has 8 divisors (see below), whose sum is σ = 1214545325160. Its totient is φ = 1208343806208.

The previous prime is 1211444441183. The next prime is 1211444441227. The reversal of 1211444441201 is 1021444441121.

It can be written as a sum of positive squares in 4 ways, for example, as 579959925601 + 631484515600 = 761551^2 + 794660^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211444441201 is a prime.

It is a super-3 number, since 3×1211444441201³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211444441101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13372265 + ... + 13462553.

It is an arithmetic number, because the mean of its divisors is an integer number (151818165645).

Almost surely, 2^{1211444441201} is an apocalyptic number.

It is an amenable number.

1211444441201 is a deficient number, since it is larger than the sum of its proper divisors (3100883959).

1211444441201 is an equidigital number, since it uses as much as digits as its factorization.

1211444441201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124483.

The product of its (nonzero) digits is 4096, while the sum is 29.

Adding to 1211444441201 its reverse (1021444441121), we get a palindrome (2232888882322).

The spelling of 1211444441201 in words is "one trillion, two hundred eleven billion, four hundred forty-four million, four hundred forty-one thousand, two hundred one".