103420221 has 4 divisors (see below), whose sum is σ = 137893632. Its totient is φ = 68946812.

The previous prime is 103420183. The next prime is 103420267. The reversal of 103420221 is 122024301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103420221 - 2⁶ = 103420157 is a prime.

It is a super-2 number, since 2×103420221² = 21391484223377682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103420221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103440221) 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, 17236701 + ... + 17236706.

It is an arithmetic number, because the mean of its divisors is an integer number (34473408).

Almost surely, 2^103420221 is an apocalyptic number.

It is an amenable number.

103420221 is a deficient number, since it is larger than the sum of its proper divisors (34473411).

103420221 is an equidigital number, since it uses as much as digits as its factorization.

103420221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34473410.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 103420221 is about 10169.5732948831. The cubic root of 103420221 is about 469.3914275194.

Adding to 103420221 its reverse (122024301), we get a palindrome (225444522).

The spelling of 103420221 in words is "one hundred three million, four hundred twenty thousand, two hundred twenty-one".