212111000220169 has 2 divisors, whose sum is σ = 212111000220170. Its totient is φ = 212111000220168.

The previous prime is 212111000220151. The next prime is 212111000220209. The reversal of 212111000220169 is 961022000111212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195427957998025 + 16683042222144 = 13979555^2 + 4084488^2 .

It is a cyclic number.

It is not a de Polignac number, because 212111000220169 - 2⁴¹ = 209911976964617 is a prime.

It is a super-2 number, since 2×212111000220169² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212111000229169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055500110084 + 106055500110085.

It is an arithmetic number, because the mean of its divisors is an integer number (106055500110085).

Almost surely, 2^{212111000220169} is an apocalyptic number.

It is an amenable number.

212111000220169 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111000220169 is an equidigital number, since it uses as much as digits as its factorization.

212111000220169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 212111000220169 in words is "two hundred twelve trillion, one hundred eleven billion, two hundred twenty thousand, one hundred sixty-nine".