102112022009 has 4 divisors (see below), whose sum is σ = 102135923316. Its totient is φ = 102088120704.

The previous prime is 102112021951. The next prime is 102112022029. The reversal of 102112022009 is 900220211201.

It is a happy number.

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 76436766784 + 25675255225 = 276472^2 + 160235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102112022009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102112022029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11944244 + ... + 11952789.

It is an arithmetic number, because the mean of its divisors is an integer number (25533980829).

Almost surely, 2^102112022009 is an apocalyptic number.

It is an amenable number.

102112022009 is a deficient number, since it is larger than the sum of its proper divisors (23901307).

102112022009 is an equidigital number, since it uses as much as digits as its factorization.

102112022009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23901306.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 102112022009 in words is "one hundred two billion, one hundred twelve million, twenty-two thousand, nine".