102445200221 has 16 divisors (see below), whose sum is σ = 126174182400. Its totient is φ = 80999111808.

The previous prime is 102445200203. The next prime is 102445200227. The reversal of 102445200221 is 122002544201.

It is a cyclic number.

It is not a de Polignac number, because 102445200221 - 2¹⁴ = 102445183837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102445200227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260216 + ... + 522113.

It is an arithmetic number, because the mean of its divisors is an integer number (7885886400).

Almost surely, 2^102445200221 is an apocalyptic number.

It is an amenable number.

102445200221 is a deficient number, since it is larger than the sum of its proper divisors (23728982179).

102445200221 is a wasteful number, since it uses less digits than its factorization.

102445200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783788.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 102445200221 its reverse (122002544201), we get a palindrome (224447744422).

The spelling of 102445200221 in words is "one hundred two billion, four hundred forty-five million, two hundred thousand, two hundred twenty-one".