102100210 has 16 divisors (see below), whose sum is σ = 184182336. Its totient is φ = 40750768.

The previous prime is 102100199. The next prime is 102100211. The reversal of 102100210 is 12001201.

It is a junction number, because it is equal to n+sod(n) for n = 102100193 and 102100202.

It is not an unprimeable number, because it can be changed into a prime (102100211) 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, 6262 + ... + 15601.

It is an arithmetic number, because the mean of its divisors is an integer number (11511396).

Almost surely, 2^102100210 is an apocalyptic number.

102100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102100210 is a deficient number, since it is larger than the sum of its proper divisors (82082126).

102100210 is a wasteful number, since it uses less digits than its factorization.

102100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22337.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 102100210 is about 10104.4648547066. The cubic root of 102100210 is about 467.3858338855.

Adding to 102100210 its reverse (12001201), we get a palindrome (114101411).

Subtracting from 102100210 its reverse (12001201), we obtain a palindrome (90099009).

The spelling of 102100210 in words is "one hundred two million, one hundred thousand, two hundred ten".