103220001 has 20 divisors (see below), whose sum is σ = 157958724. Its totient is φ = 67132800.

The previous prime is 103219979. The next prime is 103220003. The reversal of 103220001 is 100022301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15610401 + 87609600 = 3951^2 + 9360^2 .

It is not a de Polignac number, because 103220001 - 2⁹ = 103219489 is a prime.

It is a super-3 number, since 3×103220001³ (a number of 25 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (103220003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12220 + ... + 18861.

Almost surely, 2^103220001 is an apocalyptic number.

It is an amenable number.

103220001 is a deficient number, since it is larger than the sum of its proper divisors (54738723).

103220001 is an equidigital number, since it uses as much as digits as its factorization.

103220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31134 (or 31125 counting only the distinct ones).

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

The square root of 103220001 is about 10159.7244549249. The cubic root of 103220001 is about 469.0883202387.

Adding to 103220001 its reverse (100022301), we get a palindrome (203242302).

The spelling of 103220001 in words is "one hundred three million, two hundred twenty thousand, one".