212201016851 has 2 divisors, whose sum is σ = 212201016852. Its totient is φ = 212201016850.

The previous prime is 212201016823. The next prime is 212201016857. The reversal of 212201016851 is 158610102212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212201016851 - 2⁶ = 212201016787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (212201016857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106100508425 + 106100508426.

It is an arithmetic number, because the mean of its divisors is an integer number (106100508426).

Almost surely, 2^212201016851 is an apocalyptic number.

212201016851 is a deficient number, since it is larger than the sum of its proper divisors (1).

212201016851 is an equidigital number, since it uses as much as digits as its factorization.

212201016851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 29.

The spelling of 212201016851 in words is "two hundred twelve billion, two hundred one million, sixteen thousand, eight hundred fifty-one".