10221990941 has 2 divisors, whose sum is σ = 10221990942. Its totient is φ = 10221990940.

The previous prime is 10221990893. The next prime is 10221990949. The reversal of 10221990941 is 14909912201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10206858841 + 15132100 = 101029^2 + 3890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221990941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10221990895 and 10221990904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221990949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110995470 + 5110995471.

It is an arithmetic number, because the mean of its divisors is an integer number (5110995471).

Almost surely, 2^10221990941 is an apocalyptic number.

It is an amenable number.

10221990941 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221990941 is an equidigital number, since it uses as much as digits as its factorization.

10221990941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 10221990941 in words is "ten billion, two hundred twenty-one million, nine hundred ninety thousand, nine hundred forty-one".