10220120321 has 2 divisors, whose sum is σ = 10220120322. Its totient is φ = 10220120320.

The previous prime is 10220120237. The next prime is 10220120369. The reversal of 10220120321 is 12302102201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9382828225 + 837292096 = 96865^2 + 28936^2 .

It is an emirp because it is prime and its reverse (12302102201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10220120321 - 2¹⁰ = 10220119297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10220120296 and 10220120305.

It is not a weakly prime, because it can be changed into another prime (10220120821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110060160 + 5110060161.

It is an arithmetic number, because the mean of its divisors is an integer number (5110060161).

Almost surely, 2^10220120321 is an apocalyptic number.

It is an amenable number.

10220120321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220120321 is an equidigital number, since it uses as much as digits as its factorization.

10220120321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10220120321 its reverse (12302102201), we get a palindrome (22522222522).

The spelling of 10220120321 in words is "ten billion, two hundred twenty million, one hundred twenty thousand, three hundred twenty-one".