102107220 has 48 divisors (see below), whose sum is σ = 292880448. Its totient is φ = 26563840.

The previous prime is 102107191. The next prime is 102107227. The reversal of 102107220 is 22701201.

It is a super-2 number, since 2×102107220² = 20851768752256800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102107220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102107227) 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, 18294 + ... + 23213.

It is an arithmetic number, because the mean of its divisors is an integer number (6101676).

Almost surely, 2^102107220 is an apocalyptic number.

102107220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102107220 is an abundant number, since it is smaller than the sum of its proper divisors (190773228).

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

102107220 is a wasteful number, since it uses less digits than its factorization.

102107220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41560 (or 41558 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 102107220 is about 10104.8117251139. The cubic root of 102107220 is about 467.3965302387.

Adding to 102107220 its reverse (22701201), we get a palindrome (124808421).

The spelling of 102107220 in words is "one hundred two million, one hundred seven thousand, two hundred twenty".