102101220205 has 8 divisors (see below), whose sum is σ = 124247119104. Its totient is φ = 80530539600.

The previous prime is 102101220191. The next prime is 102101220209. The reversal of 102101220205 is 502022101201.

It is a happy number.

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

It is not a de Polignac number, because 102101220205 - 2⁷ = 102101220077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101220209) 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, 143804181 + ... + 143804890.

It is an arithmetic number, because the mean of its divisors is an integer number (15530889888).

Almost surely, 2^102101220205 is an apocalyptic number.

It is an amenable number.

102101220205 is a deficient number, since it is larger than the sum of its proper divisors (22145898899).

102101220205 is an equidigital number, since it uses as much as digits as its factorization.

102101220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287609147.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 102101220205 its reverse (502022101201), we get a palindrome (604123321406).

The spelling of 102101220205 in words is "one hundred two billion, one hundred one million, two hundred twenty thousand, two hundred five".