21222001202069 has 2 divisors, whose sum is σ = 21222001202070. Its totient is φ = 21222001202068.

The previous prime is 21222001201903. The next prime is 21222001202107. The reversal of 21222001202069 is 96020210022212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19804858570225 + 1417142631844 = 4450265^2 + 1190438^2 .

It is a cyclic number.

It is not a de Polignac number, because 21222001202069 - 2²⁰ = 21222000153493 is a prime.

It is a super-2 number, since 2×21222001202069² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222001222069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611000601034 + 10611000601035.

It is an arithmetic number, because the mean of its divisors is an integer number (10611000601035).

Almost surely, 2^{21222001202069} is an apocalyptic number.

It is an amenable number.

21222001202069 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222001202069 is an equidigital number, since it uses as much as digits as its factorization.

21222001202069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 21222001202069 in words is "twenty-one trillion, two hundred twenty-two billion, one million, two hundred two thousand, sixty-nine".