212202423043309 has 2 divisors, whose sum is σ = 212202423043310. Its totient is φ = 212202423043308.

The previous prime is 212202423043253. The next prime is 212202423043337. The reversal of 212202423043309 is 903340324202212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130115017799209 + 82087405244100 = 11406797^2 + 9060210^2 .

It is a cyclic number.

It is not a de Polignac number, because 212202423043309 - 2⁷ = 212202423043181 is a prime.

It is a super-4 number, since 4×212202423043309⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212202427043309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101211521654 + 106101211521655.

It is an arithmetic number, because the mean of its divisors is an integer number (106101211521655).

Almost surely, 2^{212202423043309} is an apocalyptic number.

It is an amenable number.

212202423043309 is a deficient number, since it is larger than the sum of its proper divisors (1).

212202423043309 is an equidigital number, since it uses as much as digits as its factorization.

212202423043309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 212202423043309 in words is "two hundred twelve trillion, two hundred two billion, four hundred twenty-three million, forty-three thousand, three hundred nine".