10120040221 has 2 divisors, whose sum is σ = 10120040222. Its totient is φ = 10120040220.

The previous prime is 10120040197. The next prime is 10120040233. The reversal of 10120040221 is 12204002101.

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., 7175784100 + 2944256121 = 84710^2 + 54261^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120040221 - 2⁷ = 10120040093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120041221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060020110 + 5060020111.

It is an arithmetic number, because the mean of its divisors is an integer number (5060020111).

Almost surely, 2^10120040221 is an apocalyptic number.

It is an amenable number.

10120040221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120040221 is an equidigital number, since it uses as much as digits as its factorization.

10120040221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10120040221 its reverse (12204002101), we get a palindrome (22324042322).

The spelling of 10120040221 in words is "ten billion, one hundred twenty million, forty thousand, two hundred twenty-one".