102120212209 has 8 divisors (see below), whose sum is σ = 107506951040. Its totient is φ = 96734672496.

The previous prime is 102120212197. The next prime is 102120212237. The reversal of 102120212209 is 902212021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102120212209 - 2⁵ = 102120212177 is a prime.

It is a super-2 number, since 2×102120212209² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102120212209.

It is not an unprimeable number, because it can be changed into a prime (102120212239) 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, 122262 + ... + 468175.

It is an arithmetic number, because the mean of its divisors is an integer number (13438368880).

Almost surely, 2^102120212209 is an apocalyptic number.

102120212209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

102120212209 is a deficient number, since it is larger than the sum of its proper divisors (5386738831).

102120212209 is an equidigital number, since it uses as much as digits as its factorization.

102120212209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599559.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 102120212209 in words is "one hundred two billion, one hundred twenty million, two hundred twelve thousand, two hundred nine".