1215325542001 has 4 divisors (see below), whose sum is σ = 1235248911604. Its totient is φ = 1195402172400.

The previous prime is 1215325541993. The next prime is 1215325542043. The reversal of 1215325542001 is 1002455235121.

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 61851690000 + 1153473852001 = 248700^2 + 1073999^2 .

It is a cyclic number.

It is not a de Polignac number, because 1215325542001 - 2³ = 1215325541993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215325542071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9961684710 + ... + 9961684831.

It is an arithmetic number, because the mean of its divisors is an integer number (308812227901).

Almost surely, 2^{1215325542001} is an apocalyptic number.

It is an amenable number.

1215325542001 is a deficient number, since it is larger than the sum of its proper divisors (19923369603).

1215325542001 is an equidigital number, since it uses as much as digits as its factorization.

1215325542001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19923369602.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 1215325542001 in words is "one trillion, two hundred fifteen billion, three hundred twenty-five million, five hundred forty-two thousand, one".