102112012221211 has 4 divisors (see below), whose sum is σ = 102916043813632. Its totient is φ = 101307980628792.

The previous prime is 102112012221199. The next prime is 102112012221217. The reversal of 102112012221211 is 112122210211201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 102112012221211 - 2⁷ = 102112012221083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102112012221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402015796020 + ... + 402015796273.

It is an arithmetic number, because the mean of its divisors is an integer number (25729010953408).

Almost surely, 2^{102112012221211} is an apocalyptic number.

102112012221211 is a deficient number, since it is larger than the sum of its proper divisors (804031592421).

102112012221211 is an equidigital number, since it uses as much as digits as its factorization.

102112012221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804031592420.

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

Adding to 102112012221211 its reverse (112122210211201), we get a palindrome (214234222432412).

The spelling of 102112012221211 in words is "one hundred two trillion, one hundred twelve billion, twelve million, two hundred twenty-one thousand, two hundred eleven".