1213404510401 has 4 divisors (see below), whose sum is σ = 1242999742404. Its totient is φ = 1183809278400.

The previous prime is 1213404510397. The next prime is 1213404510403. The reversal of 1213404510401 is 1040154043121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43848778801 + 1169555731600 = 209401^2 + 1081460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213404510401 - 2² = 1213404510397 is a prime.

It is a super-2 number, since 2×1213404510401² (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 (1213404510403) 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, 14797615940 + ... + 14797616021.

It is an arithmetic number, because the mean of its divisors is an integer number (310749935601).

Almost surely, 2^{1213404510401} is an apocalyptic number.

It is an amenable number.

1213404510401 is a deficient number, since it is larger than the sum of its proper divisors (29595232003).

1213404510401 is an equidigital number, since it uses as much as digits as its factorization.

1213404510401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29595232002.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 1213404510401 its reverse (1040154043121), we get a palindrome (2253558553522).

The spelling of 1213404510401 in words is "one trillion, two hundred thirteen billion, four hundred four million, five hundred ten thousand, four hundred one".