212120102010977 has 2 divisors, whose sum is σ = 212120102010978. Its totient is φ = 212120102010976.

The previous prime is 212120102010959. The next prime is 212120102011049. The reversal of 212120102010977 is 779010201021212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192675609223696 + 19444492787281 = 13880764^2 + 4409591^2 .

It is a cyclic number.

It is not a de Polignac number, because 212120102010977 - 2¹⁶ = 212120101945441 is a prime.

It is not a weakly prime, because it can be changed into another prime (212120102010577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060051005488 + 106060051005489.

It is an arithmetic number, because the mean of its divisors is an integer number (106060051005489).

Almost surely, 2^{212120102010977} is an apocalyptic number.

It is an amenable number.

212120102010977 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120102010977 is an equidigital number, since it uses as much as digits as its factorization.

212120102010977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 35.

The spelling of 212120102010977 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred two million, ten thousand, nine hundred seventy-seven".