102002100122 has 16 divisors (see below), whose sum is σ = 165492164040. Its totient is φ = 46872309312.

The previous prime is 102002100121. The next prime is 102002100169. The reversal of 102002100122 is 221001200201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101819066281 + 183033841 = 319091^2 + 13529^2 .

It is not an unprimeable number, because it can be changed into a prime (102002100121) 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 7 ways as a sum of consecutive naturals, for example, 8559893 + ... + 8571800.

Almost surely, 2^102002100122 is an apocalyptic number.

102002100122 is a deficient number, since it is larger than the sum of its proper divisors (63490063918).

102002100122 is a wasteful number, since it uses less digits than its factorization.

102002100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17131937.

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

Adding to 102002100122 its reverse (221001200201), we get a palindrome (323003300323).

The spelling of 102002100122 in words is "one hundred two billion, two million, one hundred thousand, one hundred twenty-two".