45220221012 has 24 divisors (see below), whose sum is σ = 105703297056. Its totient is φ = 15046343008.

The previous prime is 45220220999. The next prime is 45220221023. The reversal of 45220221012 is 21012202254.

It is a self number, because there is not a number n which added to its sum of digits gives 45220221012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3376038 + ... + 3389405.

It is an arithmetic number, because the mean of its divisors is an integer number (4404304044).

Almost surely, 2^45220221012 is an apocalyptic number.

It is an amenable number.

45220221012 is an abundant number, since it is smaller than the sum of its proper divisors (60483076044).

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

45220221012 is a wasteful number, since it uses less digits than its factorization.

45220221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6766007 (or 6766005 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 45220221012 its reverse (21012202254), we get a palindrome (66232423266).

The spelling of 45220221012 in words is "forty-five billion, two hundred twenty million, two hundred twenty-one thousand, twelve".