45521201220 has 48 divisors (see below), whose sum is σ = 139046580288. Its totient is φ = 11035442560.

The previous prime is 45521201213. The next prime is 45521201221. The reversal of 45521201220 is 2210212554.

It is not an unprimeable number, because it can be changed into a prime (45521201221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34485099 + ... + 34486418.

It is an arithmetic number, because the mean of its divisors is an integer number (2896803756).

Almost surely, 2^45521201220 is an apocalyptic number.

It is an amenable number.

45521201220 is an abundant number, since it is smaller than the sum of its proper divisors (93525379068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45521201220 is a wasteful number, since it uses less digits than its factorization.

45521201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68971540 (or 68971538 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 45521201220 its reverse (2210212554), we get a palindrome (47731413774).

The spelling of 45521201220 in words is "forty-five billion, five hundred twenty-one million, two hundred one thousand, two hundred twenty".