103213220 has 48 divisors (see below), whose sum is σ = 240359616. Its totient is φ = 36912000.

The previous prime is 103213219. The next prime is 103213223. The reversal of 103213220 is 22312301.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 103213195 and 103213204.

It is not an unprimeable number, because it can be changed into a prime (103213223) 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, 9575 + ... + 17265.

It is an arithmetic number, because the mean of its divisors is an integer number (5007492).

Almost surely, 2^103213220 is an apocalyptic number.

103213220 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 103213220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120179808).

103213220 is an abundant number, since it is smaller than the sum of its proper divisors (137146396).

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

103213220 is a wasteful number, since it uses less digits than its factorization.

103213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772 (or 7770 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 103213220 is about 10159.3907297633. The cubic root of 103213220 is about 469.0780478188.

Adding to 103213220 its reverse (22312301), we get a palindrome (125525521).

The spelling of 103213220 in words is "one hundred three million, two hundred thirteen thousand, two hundred twenty".