10221108949 has 2 divisors, whose sum is σ = 10221108950. Its totient is φ = 10221108948.

The previous prime is 10221108923. The next prime is 10221108959. The reversal of 10221108949 is 94980112201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8307046449 + 1914062500 = 91143^2 + 43750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221108949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221108959) 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, 5110554474 + 5110554475.

It is an arithmetic number, because the mean of its divisors is an integer number (5110554475).

Almost surely, 2^10221108949 is an apocalyptic number.

It is an amenable number.

10221108949 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221108949 is an equidigital number, since it uses as much as digits as its factorization.

10221108949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 10221108949 in words is "ten billion, two hundred twenty-one million, one hundred eight thousand, nine hundred forty-nine".