212874687811 has 2 divisors, whose sum is σ = 212874687812. Its totient is φ = 212874687810.

The previous prime is 212874687799. The next prime is 212874687829. The reversal of 212874687811 is 118786478212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212874687811 is a prime.

It is not a weakly prime, because it can be changed into another prime (212874687511) 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, 106437343905 + 106437343906.

It is an arithmetic number, because the mean of its divisors is an integer number (106437343906).

Almost surely, 2^212874687811 is an apocalyptic number.

212874687811 is a deficient number, since it is larger than the sum of its proper divisors (1).

212874687811 is an equidigital number, since it uses as much as digits as its factorization.

212874687811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2408448, while the sum is 55.

The spelling of 212874687811 in words is "two hundred twelve billion, eight hundred seventy-four million, six hundred eighty-seven thousand, eight hundred eleven".