21222302219969 has 2 divisors, whose sum is σ = 21222302219970. Its totient is φ = 21222302219968.

The previous prime is 21222302219953. The next prime is 21222302219981. The reversal of 21222302219969 is 96991220322212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20772738674944 + 449563545025 = 4557712^2 + 670495^2 .

It is a cyclic number.

It is not a de Polignac number, because 21222302219969 - 2⁴ = 21222302219953 is a prime.

It is a super-2 number, since 2×21222302219969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21222302219929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611151109984 + 10611151109985.

It is an arithmetic number, because the mean of its divisors is an integer number (10611151109985).

Almost surely, 2^{21222302219969} is an apocalyptic number.

It is an amenable number.

21222302219969 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222302219969 is an equidigital number, since it uses as much as digits as its factorization.

21222302219969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 21222302219969 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred two million, two hundred nineteen thousand, nine hundred sixty-nine".