102002222101 has 4 divisors (see below), whose sum is σ = 109848546892. Its totient is φ = 94155897312.

The previous prime is 102002222093. The next prime is 102002222123. The reversal of 102002222101 is 101222200201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101222200201 = 94099 ⋅1075699.

It can be written as a sum of positive squares in 2 ways, for example, as 52315583076 + 49686639025 = 228726^2 + 222905^2 .

It is a cyclic number.

It is not a de Polignac number, because 102002222101 - 2³ = 102002222093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 7846324777 = 102002222101 / (1 + 0 + 2 + 0 + 0 + 2 + 2 + 2 + 2 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002222131) 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, 3923162376 + ... + 3923162401.

It is an arithmetic number, because the mean of its divisors is an integer number (27462136723).

Almost surely, 2^102002222101 is an apocalyptic number.

It is an amenable number.

102002222101 is a deficient number, since it is larger than the sum of its proper divisors (7846324791).

102002222101 is an equidigital number, since it uses as much as digits as its factorization.

102002222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846324790.

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

Adding to 102002222101 its reverse (101222200201), we get a palindrome (203224422302).

The spelling of 102002222101 in words is "one hundred two billion, two million, two hundred twenty-two thousand, one hundred one".