212001020120977 has 2 divisors, whose sum is σ = 212001020120978. Its totient is φ = 212001020120976.

The previous prime is 212001020120963. The next prime is 212001020121061. The reversal of 212001020120977 is 779021020100212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151451394420481 + 60549625700496 = 12306559^2 + 7781364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212001020120977 is a prime.

It is not a weakly prime, because it can be changed into another prime (212001020120677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000510060488 + 106000510060489.

It is an arithmetic number, because the mean of its divisors is an integer number (106000510060489).

Almost surely, 2^{212001020120977} is an apocalyptic number.

It is an amenable number.

212001020120977 is a deficient number, since it is larger than the sum of its proper divisors (1).

212001020120977 is an equidigital number, since it uses as much as digits as its factorization.

212001020120977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 212001020120977 in words is "two hundred twelve trillion, one billion, twenty million, one hundred twenty thousand, nine hundred seventy-seven".