102212120202123 has 4 divisors (see below), whose sum is σ = 136282826936168. Its totient is φ = 68141413468080.

The previous prime is 102212120202119. The next prime is 102212120202251. The reversal of 102212120202123 is 321202021212201.

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

It is not a de Polignac number, because 102212120202123 - 2² = 102212120202119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102212120202123.

It is not an unprimeable number, because it can be changed into a prime (102212120202113) 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, 17035353367018 + ... + 17035353367023.

It is an arithmetic number, because the mean of its divisors is an integer number (34070706734042).

Almost surely, 2^{102212120202123} is an apocalyptic number.

102212120202123 is a deficient number, since it is larger than the sum of its proper divisors (34070706734045).

102212120202123 is an equidigital number, since it uses as much as digits as its factorization.

102212120202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34070706734044.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 102212120202123 its reverse (321202021212201), we get a palindrome (423414141414324).

The spelling of 102212120202123 in words is "one hundred two trillion, two hundred twelve billion, one hundred twenty million, two hundred two thousand, one hundred twenty-three".