45215135221 has 4 divisors (see below), whose sum is σ = 47594879200. Its totient is φ = 42835391244.

The previous prime is 45215135201. The next prime is 45215135243. The reversal of 45215135221 is 12253151254.

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 45215135221 - 2⁹ = 45215134709 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 (45215135201) 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, 1189871961 + ... + 1189871998.

It is an arithmetic number, because the mean of its divisors is an integer number (11898719800).

Almost surely, 2^45215135221 is an apocalyptic number.

It is an amenable number.

45215135221 is a deficient number, since it is larger than the sum of its proper divisors (2379743979).

45215135221 is a wasteful number, since it uses less digits than its factorization.

45215135221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379743978.

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

Adding to 45215135221 its reverse (12253151254), we get a palindrome (57468286475).

The spelling of 45215135221 in words is "forty-five billion, two hundred fifteen million, one hundred thirty-five thousand, two hundred twenty-one".