103221220231 has 4 divisors (see below), whose sum is σ = 103368469464. Its totient is φ = 103073971000.

The previous prime is 103221220189. The next prime is 103221220247. The reversal of 103221220231 is 132022122301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 103221220231 - 2⁷ = 103221220103 is a prime.

It is a super-2 number, since 2×103221220231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103221220199 and 103221220208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103221220631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73623565 + ... + 73624966.

It is an arithmetic number, because the mean of its divisors is an integer number (25842117366).

Almost surely, 2^103221220231 is an apocalyptic number.

103221220231 is a deficient number, since it is larger than the sum of its proper divisors (147249233).

103221220231 is an equidigital number, since it uses as much as digits as its factorization.

103221220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147249232.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 103221220231 its reverse (132022122301), we get a palindrome (235243342532).

The spelling of 103221220231 in words is "one hundred three billion, two hundred twenty-one million, two hundred twenty thousand, two hundred thirty-one".