103021220 has 12 divisors (see below), whose sum is σ = 216344604. Its totient is φ = 41208480.

The previous prime is 103021201. The next prime is 103021229. The reversal of 103021220 is 22120301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24840256 + 78180964 = 4984^2 + 8842^2 .

It is a super-2 number, since 2×103021220² = 21226743540576800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103021229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575511 + ... + 2575550.

It is an arithmetic number, because the mean of its divisors is an integer number (18028717).

Almost surely, 2^103021220 is an apocalyptic number.

103021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103021220 is an abundant number, since it is smaller than the sum of its proper divisors (113323384).

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

103021220 is a wasteful number, since it uses less digits than its factorization.

103021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151070 (or 5151068 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 103021220 is about 10149.9369456170. The cubic root of 103021220 is about 468.7870034196.

Adding to 103021220 its reverse (22120301), we get a palindrome (125141521).

The spelling of 103021220 in words is "one hundred three million, twenty-one thousand, two hundred twenty".