102221110202122 has 4 divisors (see below), whose sum is σ = 153331665303186. Its totient is φ = 51110555101060.

The previous prime is 102221110202093. The next prime is 102221110202173. The reversal of 102221110202122 is 221202011122201.

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

It can be written as a sum of positive squares in only one way, i.e., 90315580909401 + 11905529292721 = 9503451^2 + 3450439^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102221110202122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555277550529 + ... + 25555277550532.

Almost surely, 2^{102221110202122} is an apocalyptic number.

102221110202122 is a deficient number, since it is larger than the sum of its proper divisors (51110555101064).

102221110202122 is an equidigital number, since it uses as much as digits as its factorization.

102221110202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51110555101063.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102221110202122 its reverse (221202011122201), we get a palindrome (323423121324323).

The spelling of 102221110202122 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred ten million, two hundred two thousand, one hundred twenty-two".