103020212221 has 2 divisors, whose sum is σ = 103020212222. Its totient is φ = 103020212220.

The previous prime is 103020212213. The next prime is 103020212263. The reversal of 103020212221 is 122212020301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89843468121 + 13176744100 = 299739^2 + 114790^2 .

It is a cyclic number.

It is not a de Polignac number, because 103020212221 - 2³ = 103020212213 is a prime.

It is a super-2 number, since 2×103020212221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103020212195 and 103020212204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103020212621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51510106110 + 51510106111.

It is an arithmetic number, because the mean of its divisors is an integer number (51510106111).

Almost surely, 2^103020212221 is an apocalyptic number.

It is an amenable number.

103020212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

103020212221 is an equidigital number, since it uses as much as digits as its factorization.

103020212221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 103020212221 its reverse (122212020301), we get a palindrome (225232232522).

The spelling of 103020212221 in words is "one hundred three billion, twenty million, two hundred twelve thousand, two hundred twenty-one".