102002102122 has 4 divisors (see below), whose sum is σ = 153003153186. Its totient is φ = 51001051060.

The previous prime is 102002102099. The next prime is 102002102159. The reversal of 102002102122 is 221201200201.

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: 221201200201 = 23 ⋅9617443487.

It can be written as a sum of positive squares in only one way, i.e., 54255919041 + 47746183081 = 232929^2 + 218509^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500525529 + ... + 25500525532.

Almost surely, 2^102002102122 is an apocalyptic number.

102002102122 is a deficient number, since it is larger than the sum of its proper divisors (51001051064).

102002102122 is an equidigital number, since it uses as much as digits as its factorization.

102002102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51001051063.

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

Adding to 102002102122 its reverse (221201200201), we get a palindrome (323203302323).

The spelling of 102002102122 in words is "one hundred two billion, two million, one hundred two thousand, one hundred twenty-two".