103121220 has 48 divisors (see below), whose sum is σ = 296549568. Its totient is φ = 26755200.

The previous prime is 103121209. The next prime is 103121237. The reversal of 103121220 is 22121301.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 103121196 and 103121205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21006 + ... + 25445.

It is an arithmetic number, because the mean of its divisors is an integer number (6178116).

Almost surely, 2^103121220 is an apocalyptic number.

103121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103121220 is an abundant number, since it is smaller than the sum of its proper divisors (193428348).

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

103121220 is a wasteful number, since it uses less digits than its factorization.

103121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46500 (or 46498 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 103121220 is about 10154.8618897551. The cubic root of 103121220 is about 468.9386341242.

Adding to 103121220 its reverse (22121301), we get a palindrome (125242521).

The spelling of 103121220 in words is "one hundred three million, one hundred twenty-one thousand, two hundred twenty".