10221000161 has 2 divisors, whose sum is σ = 10221000162. Its totient is φ = 10221000160.

The previous prime is 10221000157. The next prime is 10221000203. The reversal of 10221000161 is 16100012201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9979011025 + 241989136 = 99895^2 + 15556^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221000161 - 2² = 10221000157 is a prime.

It is not a weakly prime, because it can be changed into another prime (10221002161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110500080 + 5110500081.

It is an arithmetic number, because the mean of its divisors is an integer number (5110500081).

Almost surely, 2^10221000161 is an apocalyptic number.

It is an amenable number.

10221000161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221000161 is an equidigital number, since it uses as much as digits as its factorization.

10221000161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10221000161 its reverse (16100012201), we get a palindrome (26321012362).

The spelling of 10221000161 in words is "ten billion, two hundred twenty-one million, one hundred sixty-one", and thus it is an aban number.