102011211812 has 24 divisors (see below), whose sum is σ = 193977181440. Its totient is φ = 46762354080.

The previous prime is 102011211811. The next prime is 102011211821. The reversal of 102011211812 is 218112110201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102011211811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21646883 + ... + 21651594.

It is an arithmetic number, because the mean of its divisors is an integer number (8082382560).

Almost surely, 2^102011211812 is an apocalyptic number.

It is an amenable number.

102011211812 is a deficient number, since it is larger than the sum of its proper divisors (91965969628).

102011211812 is a wasteful number, since it uses less digits than its factorization.

102011211812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43298531 (or 43298529 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

The spelling of 102011211812 in words is "one hundred two billion, eleven million, two hundred eleven thousand, eight hundred twelve".