315045225601221 has 4 divisors (see below), whose sum is σ = 420060300801632. Its totient is φ = 210030150400812.

The previous prime is 315045225601219. The next prime is 315045225601283. The reversal of 315045225601221 is 122106522540513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 315045225601221 - 2¹ = 315045225601219 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 315045225601221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315045225609221) 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, 52507537600201 + ... + 52507537600206.

It is an arithmetic number, because the mean of its divisors is an integer number (105015075200408).

Almost surely, 2^{315045225601221} is an apocalyptic number.

It is an amenable number.

315045225601221 is a deficient number, since it is larger than the sum of its proper divisors (105015075200411).

315045225601221 is a wasteful number, since it uses less digits than its factorization.

315045225601221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105015075200410.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 315045225601221 in words is "three hundred fifteen trillion, forty-five billion, two hundred twenty-five million, six hundred one thousand, two hundred twenty-one".