102210055 has 4 divisors (see below), whose sum is σ = 122652072. Its totient is φ = 81768040.

The previous prime is 102210049. The next prime is 102210067. The reversal of 102210055 is 550012201.

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

It is not a de Polignac number, because 102210055 - 2⁷ = 102209927 is a prime.

It is a super-3 number, since 3×102210055³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10221001 + ... + 10221010.

It is an arithmetic number, because the mean of its divisors is an integer number (30663018).

Almost surely, 2^102210055 is an apocalyptic number.

102210055 is a deficient number, since it is larger than the sum of its proper divisors (20442017).

102210055 is an equidigital number, since it uses as much as digits as its factorization.

102210055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20442016.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 102210055 is about 10109.8988620065. The cubic root of 102210055 is about 467.5533869084.

Adding to 102210055 its reverse (550012201), we get a palindrome (652222256).

The spelling of 102210055 in words is "one hundred two million, two hundred ten thousand, fifty-five".