102112122120211 has 4 divisors (see below), whose sum is σ = 116699568137392. Its totient is φ = 87524676103032.

The previous prime is 102112122120199. The next prime is 102112122120257. The reversal of 102112122120211 is 112021221211201.

It is a happy number.

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

It is not a de Polignac number, because 102112122120211 - 2¹⁷ = 102112121989139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102112122120311) 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, 7293723008580 + ... + 7293723008593.

It is an arithmetic number, because the mean of its divisors is an integer number (29174892034348).

Almost surely, 2^{102112122120211} is an apocalyptic number.

102112122120211 is a deficient number, since it is larger than the sum of its proper divisors (14587446017181).

102112122120211 is an equidigital number, since it uses as much as digits as its factorization.

102112122120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14587446017180.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102112122120211 its reverse (112021221211201), we get a palindrome (214133343331412).

The spelling of 102112122120211 in words is "one hundred two trillion, one hundred twelve billion, one hundred twenty-two million, one hundred twenty thousand, two hundred eleven".