212820671071 has 2 divisors, whose sum is σ = 212820671072. Its totient is φ = 212820671070.

The previous prime is 212820671053. The next prime is 212820671081. The reversal of 212820671071 is 170176028212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212820671071 - 2²⁵ = 212787116639 is a prime.

It is a super-2 number, since 2×212820671071² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212820671071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212820671081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106410335535 + 106410335536.

It is an arithmetic number, because the mean of its divisors is an integer number (106410335536).

Almost surely, 2^212820671071 is an apocalyptic number.

212820671071 is a deficient number, since it is larger than the sum of its proper divisors (1).

212820671071 is an equidigital number, since it uses as much as digits as its factorization.

212820671071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 37.

Adding to 212820671071 its reverse (170176028212), we get a palindrome (382996699283).

The spelling of 212820671071 in words is "two hundred twelve billion, eight hundred twenty million, six hundred seventy-one thousand, seventy-one".