102220012545 has 48 divisors (see below), whose sum is σ = 190361249280. Its totient is φ = 46702903296.

The previous prime is 102220012537. The next prime is 102220012607. The reversal of 102220012545 is 545210022201.

It is not a de Polignac number, because 102220012545 - 2³ = 102220012537 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1301761 + ... + 1378049.

It is an arithmetic number, because the mean of its divisors is an integer number (3965859360).

Almost surely, 2^102220012545 is an apocalyptic number.

102220012545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102220012545 is a deficient number, since it is larger than the sum of its proper divisors (88141236735).

102220012545 is a wasteful number, since it uses less digits than its factorization.

102220012545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78134 (or 78127 counting only the distinct ones).

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

Adding to 102220012545 its reverse (545210022201), we get a palindrome (647430034746).

The spelling of 102220012545 in words is "one hundred two billion, two hundred twenty million, twelve thousand, five hundred forty-five".