1213443115201 has 8 divisors (see below), whose sum is σ = 1236557278440. Its totient is φ = 1190337063552.

The previous prime is 1213443115163. The next prime is 1213443115237. The reversal of 1213443115201 is 1025113443121.

It can be written as a sum of positive squares in 4 ways, for example, as 586533881025 + 626909234176 = 765855^2 + 791776^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1213443115201 - 2¹⁷ = 1213442984129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213443115201.

It is not an unprimeable number, because it can be changed into a prime (1213443116201) 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, 1725436 + ... + 2324653.

It is an arithmetic number, because the mean of its divisors is an integer number (154569659805).

Almost surely, 2^{1213443115201} is an apocalyptic number.

It is an amenable number.

1213443115201 is a deficient number, since it is larger than the sum of its proper divisors (23114163239).

1213443115201 is an equidigital number, since it uses as much as digits as its factorization.

1213443115201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055795.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 1213443115201 its reverse (1025113443121), we get a palindrome (2238556558322).

The spelling of 1213443115201 in words is "one trillion, two hundred thirteen billion, four hundred forty-three million, one hundred fifteen thousand, two hundred one".