102000221201 has 4 divisors (see below), whose sum is σ = 102000866100. Its totient is φ = 101999576304.

The previous prime is 102000221179. The next prime is 102000221251. The reversal of 102000221201 is 102122000201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 46579998976 + 55420222225 = 215824^2 + 235415^2 .

It is a cyclic number.

It is not a de Polignac number, because 102000221201 - 2²² = 101996026897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102000221251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94595 + ... + 461463.

It is an arithmetic number, because the mean of its divisors is an integer number (25500216525).

Almost surely, 2^102000221201 is an apocalyptic number.

It is an amenable number.

102000221201 is a deficient number, since it is larger than the sum of its proper divisors (644899).

102000221201 is an equidigital number, since it uses as much as digits as its factorization.

102000221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644898.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102000221201 its reverse (102122000201), we get a palindrome (204122221402).

The spelling of 102000221201 in words is "one hundred two billion, two hundred twenty-one thousand, two hundred one".