1315201504421 has 12 divisors (see below), whose sum is σ = 1551476570400. Its totient is φ = 1111437888120.

The previous prime is 1315201504417. The next prime is 1315201504429. The reversal of 1315201504421 is 1244051025131.

It is a happy number.

It is not a de Polignac number, because 1315201504421 - 2² = 1315201504417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315201504429) 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, 189016571 + ... + 189023528.

It is an arithmetic number, because the mean of its divisors is an integer number (129289714200).

Almost surely, 2^{1315201504421} is an apocalyptic number.

It is an amenable number.

1315201504421 is a deficient number, since it is larger than the sum of its proper divisors (236275065979).

1315201504421 is an equidigital number, since it uses as much as digits as its factorization.

1315201504421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378040184 (or 378040177 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1315201504421 its reverse (1244051025131), we get a palindrome (2559252529552).

The spelling of 1315201504421 in words is "one trillion, three hundred fifteen billion, two hundred one million, five hundred four thousand, four hundred twenty-one".