212202209969 has 2 divisors, whose sum is σ = 212202209970. Its totient is φ = 212202209968.

The previous prime is 212202209951. The next prime is 212202209977. The reversal of 212202209969 is 969902202212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138728686369 + 73473523600 = 372463^2 + 271060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212202209969 is a prime.

It is a super-2 number, since 2×212202209969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212202209909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101104984 + 106101104985.

It is an arithmetic number, because the mean of its divisors is an integer number (106101104985).

Almost surely, 2^212202209969 is an apocalyptic number.

It is an amenable number.

212202209969 is a deficient number, since it is larger than the sum of its proper divisors (1).

212202209969 is an equidigital number, since it uses as much as digits as its factorization.

212202209969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 212202209969 in words is "two hundred twelve billion, two hundred two million, two hundred nine thousand, nine hundred sixty-nine".