22100020022161 has 2 divisors, whose sum is σ = 22100020022162. Its totient is φ = 22100020022160.

The previous prime is 22100020022081. The next prime is 22100020022183. The reversal of 22100020022161 is 16122002000122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15515248323600 + 6584771698561 = 3938940^2 + 2566081^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100020022161 - 2⁹ = 22100020021649 is a prime.

It is a super-2 number, since 2×22100020022161² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22100020029161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050010011080 + 11050010011081.

It is an arithmetic number, because the mean of its divisors is an integer number (11050010011081).

Almost surely, 2^{22100020022161} is an apocalyptic number.

It is an amenable number.

22100020022161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100020022161 is an equidigital number, since it uses as much as digits as its factorization.

22100020022161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22100020022161 its reverse (16122002000122), we get a palindrome (38222022022283).

The spelling of 22100020022161 in words is "twenty-two trillion, one hundred billion, twenty million, twenty-two thousand, one hundred sixty-one".