10211212011977 has 2 divisors, whose sum is σ = 10211212011978. Its totient is φ = 10211212011976.

The previous prime is 10211212011967. The next prime is 10211212012031. The reversal of 10211212011977 is 77911021211201.

10211212011977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10164549099721 + 46662912256 = 3188189^2 + 216016^2 .

It is an emirp because it is prime and its reverse (77911021211201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10211212011977 - 2⁴ = 10211212011961 is a prime.

It is not a weakly prime, because it can be changed into another prime (10211212011937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105606005988 + 5105606005989.

It is an arithmetic number, because the mean of its divisors is an integer number (5105606005989).

Almost surely, 2^{10211212011977} is an apocalyptic number.

It is an amenable number.

10211212011977 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211212011977 is an equidigital number, since it uses as much as digits as its factorization.

10211212011977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 35.

The spelling of 10211212011977 in words is "ten trillion, two hundred eleven billion, two hundred twelve million, eleven thousand, nine hundred seventy-seven".