21220122102163 has 2 divisors, whose sum is σ = 21220122102164. Its totient is φ = 21220122102162.

The previous prime is 21220122102131. The next prime is 21220122102173. The reversal of 21220122102163 is 36120122102212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220122102163 - 2⁵ = 21220122102131 is a prime.

It is a super-3 number, since 3×21220122102163³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21220122102173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610061051081 + 10610061051082.

It is an arithmetic number, because the mean of its divisors is an integer number (10610061051082).

Almost surely, 2^{21220122102163} is an apocalyptic number.

21220122102163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220122102163 is an equidigital number, since it uses as much as digits as its factorization.

21220122102163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21220122102163 its reverse (36120122102212), we get a palindrome (57340244204375).

The spelling of 21220122102163 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred two thousand, one hundred sixty-three".