102000122221 has 4 divisors (see below), whose sum is σ = 103146191100. Its totient is φ = 100854053344.

The previous prime is 102000122207. The next prime is 102000122227. The reversal of 102000122221 is 122221000201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49929902500 + 52070219721 = 223450^2 + 228189^2 .

It is a cyclic number.

It is not a de Polignac number, because 102000122221 - 2³¹ = 99852638573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000122227) 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, 573034306 + ... + 573034483.

It is an arithmetic number, because the mean of its divisors is an integer number (25786547775).

Almost surely, 2^102000122221 is an apocalyptic number.

It is an amenable number.

102000122221 is a deficient number, since it is larger than the sum of its proper divisors (1146068879).

102000122221 is an equidigital number, since it uses as much as digits as its factorization.

102000122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146068878.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102000122221 its reverse (122221000201), we get a palindrome (224221122422).

The spelling of 102000122221 in words is "one hundred two billion, one hundred twenty-two thousand, two hundred twenty-one".