103122101221 has 4 divisors (see below), whose sum is σ = 103447407852. Its totient is φ = 102796794592.

The previous prime is 103122101141. The next prime is 103122101263. The reversal of 103122101221 is 122101221301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122101221301 = 547 ⋅223219783.

It can be written as a sum of positive squares in 2 ways, for example, as 41426496225 + 61695604996 = 203535^2 + 248386^2 .

It is a cyclic number.

It is not a de Polignac number, because 103122101221 - 2⁹ = 103122100709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103122101195 and 103122101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103122131221) 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, 162652840 + ... + 162653473.

It is an arithmetic number, because the mean of its divisors is an integer number (25861851963).

Almost surely, 2^103122101221 is an apocalyptic number.

It is an amenable number.

103122101221 is a deficient number, since it is larger than the sum of its proper divisors (325306631).

103122101221 is an equidigital number, since it uses as much as digits as its factorization.

103122101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325306630.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 103122101221 its reverse (122101221301), we get a palindrome (225223322522).

The spelling of 103122101221 in words is "one hundred three billion, one hundred twenty-two million, one hundred one thousand, two hundred twenty-one".