10220331478949 has 2 divisors, whose sum is σ = 10220331478950. Its totient is φ = 10220331478948.

The previous prime is 10220331478937. The next prime is 10220331479009. The reversal of 10220331478949 is 94987413302201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10075736092900 + 144595386049 = 3174230^2 + 380257^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220331478949 - 2⁴⁰ = 9120819851173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10220331478949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10220331478849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110165739474 + 5110165739475.

It is an arithmetic number, because the mean of its divisors is an integer number (5110165739475).

Almost surely, 2^{10220331478949} is an apocalyptic number.

It is an amenable number.

10220331478949 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220331478949 is an equidigital number, since it uses as much as digits as its factorization.

10220331478949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 10220331478949 in words is "ten trillion, two hundred twenty billion, three hundred thirty-one million, four hundred seventy-eight thousand, nine hundred forty-nine".