212120101486729 has 2 divisors, whose sum is σ = 212120101486730. Its totient is φ = 212120101486728.

The previous prime is 212120101486723. The next prime is 212120101486823. The reversal of 212120101486729 is 927684101021212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107617324011129 + 104502777475600 = 10373877^2 + 10222660^2 .

It is a cyclic number.

It is not a de Polignac number, because 212120101486729 - 2⁵ = 212120101486697 is a prime.

It is not a weakly prime, because it can be changed into another prime (212120101486723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060050743364 + 106060050743365.

It is an arithmetic number, because the mean of its divisors is an integer number (106060050743365).

Almost surely, 2^{212120101486729} is an apocalyptic number.

It is an amenable number.

212120101486729 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120101486729 is an equidigital number, since it uses as much as digits as its factorization.

212120101486729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 212120101486729 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred one million, four hundred eighty-six thousand, seven hundred twenty-nine".