103220100 has 54 divisors (see below), whose sum is σ = 323540490. Its totient is φ = 27525120.

The previous prime is 103220099. The next prime is 103220119. The reversal of 103220100 is 1022301.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 278784 + 102941316 = 528^2 + 10146^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56445 + ... + 58244.

Almost surely, 2^103220100 is an apocalyptic number.

103220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103220100 is an abundant number, since it is smaller than the sum of its proper divisors (220320390).

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

103220100 is a wasteful number, since it uses less digits than its factorization.

103220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114709 (or 114699 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 103220100 is about 10159.7293271032. The cubic root of 103220100 is about 469.0884702087.

Adding to 103220100 its reverse (1022301), we get a palindrome (104242401).

The spelling of 103220100 in words is "one hundred three million, two hundred twenty thousand, one hundred".