102221210 has 32 divisors (see below), whose sum is σ = 226461312. Its totient is φ = 32351040.

The previous prime is 102221209. The next prime is 102221213. The reversal of 102221210 is 12122201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102221191 and 102221200.

It is not an unprimeable number, because it can be changed into a prime (102221213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55256 + ... + 57075.

It is an arithmetic number, because the mean of its divisors is an integer number (7076916).

Almost surely, 2^102221210 is an apocalyptic number.

102221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102221210 is an abundant number, since it is smaller than the sum of its proper divisors (124240102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102221210 is a wasteful number, since it uses less digits than its factorization.

102221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112358.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102221210 is about 10110.4505339772. The cubic root of 102221210 is about 467.5703955687.

Adding to 102221210 its reverse (12122201), we get a palindrome (114343411).

Subtracting from 102221210 its reverse (12122201), we obtain a palindrome (90099009).

The spelling of 102221210 in words is "one hundred two million, two hundred twenty-one thousand, two hundred ten".