102220 has 24 divisors (see below), whose sum is σ = 226800. Its totient is φ = 38592.

The previous prime is 102217. The next prime is 102229. The reversal of 102220 is 22201.

102220 = T₉ + T₁₀ + ... + T₈₄.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102229) 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, 246 + ... + 514.

It is an arithmetic number, because the mean of its divisors is an integer number (9450).

2¹⁰²²²⁰ is an apocalyptic number.

102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113400).

102220 is an abundant number, since it is smaller than the sum of its proper divisors (124580).

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

102220 is a wasteful number, since it uses less digits than its factorization.

102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 102220 is about 319.7186262951. The cubic root of 102220 is about 46.7568550673.

Adding to 102220 its reverse (22201), we get a palindrome (124421).

The spelling of 102220 in words is "one hundred two thousand, two hundred twenty", and thus it is an iban number.