102012102212101 has 4 divisors (see below), whose sum is σ = 105529760909100. Its totient is φ = 98494443515104.

The previous prime is 102012102212051. The next prime is 102012102212117. The reversal of 102012102212101 is 101212201210201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40571995248225 + 61440106963876 = 6369615^2 + 7838374^2 .

It is a cyclic number.

It is not a de Polignac number, because 102012102212101 - 2⁷ = 102012102211973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012102212131) 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, 1758829348456 + ... + 1758829348513.

It is an arithmetic number, because the mean of its divisors is an integer number (26382440227275).

Almost surely, 2^{102012102212101} is an apocalyptic number.

It is an amenable number.

102012102212101 is a deficient number, since it is larger than the sum of its proper divisors (3517658696999).

102012102212101 is an equidigital number, since it uses as much as digits as its factorization.

102012102212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517658696998.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102012102212101 its reverse (101212201210201), we get a palindrome (203224303422302).

The spelling of 102012102212101 in words is "one hundred two trillion, twelve billion, one hundred two million, two hundred twelve thousand, one hundred one".