212729956867 has 2 divisors, whose sum is σ = 212729956868. Its totient is φ = 212729956866.

The previous prime is 212729956847. The next prime is 212729956871. The reversal of 212729956867 is 768659927212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212729956867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212729956799 and 212729956808.

It is not a weakly prime, because it can be changed into another prime (212729956847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106364978433 + 106364978434.

It is an arithmetic number, because the mean of its divisors is an integer number (106364978434).

Almost surely, 2^212729956867 is an apocalyptic number.

212729956867 is a deficient number, since it is larger than the sum of its proper divisors (1).

212729956867 is an equidigital number, since it uses as much as digits as its factorization.

212729956867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45722880, while the sum is 64.

The spelling of 212729956867 in words is "two hundred twelve billion, seven hundred twenty-nine million, nine hundred fifty-six thousand, eight hundred sixty-seven".