103020231221 has 4 divisors (see below), whose sum is σ = 103831414272. Its totient is φ = 102209048172.

The previous prime is 103020231173. The next prime is 103020231263. The reversal of 103020231221 is 122132020301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122132020301 = 22013 ⋅5548177.

It is a cyclic number.

It is not a de Polignac number, because 103020231221 - 2¹⁴ = 103020214837 is a prime.

It is a super-2 number, since 2×103020231221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103020231221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103020231271) 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, 405591335 + ... + 405591588.

It is an arithmetic number, because the mean of its divisors is an integer number (25957853568).

Almost surely, 2^103020231221 is an apocalyptic number.

It is an amenable number.

103020231221 is a deficient number, since it is larger than the sum of its proper divisors (811183051).

103020231221 is an equidigital number, since it uses as much as digits as its factorization.

103020231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811183050.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 103020231221 its reverse (122132020301), we get a palindrome (225152251522).

The spelling of 103020231221 in words is "one hundred three billion, twenty million, two hundred thirty-one thousand, two hundred twenty-one".