103221426 has 32 divisors (see below), whose sum is σ = 257384448. Its totient is φ = 26810640.

The previous prime is 103221421. The next prime is 103221427. The reversal of 103221426 is 624122301.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (103221421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111250 + ... + 112173.

It is an arithmetic number, because the mean of its divisors is an integer number (8043264).

Almost surely, 2^103221426 is an apocalyptic number.

103221426 is an abundant number, since it is smaller than the sum of its proper divisors (154163022).

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

103221426 is a wasteful number, since it uses less digits than its factorization.

103221426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223446.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 103221426 is about 10159.7945845376. The cubic root of 103221426 is about 469.0904788894.

Adding to 103221426 its reverse (624122301), we get a palindrome (727343727).

The spelling of 103221426 in words is "one hundred three million, two hundred twenty-one thousand, four hundred twenty-six".