212120964487 has 2 divisors, whose sum is σ = 212120964488. Its totient is φ = 212120964486.

The previous prime is 212120964479. The next prime is 212120964511. The reversal of 212120964487 is 784469021212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212120964487 - 2³ = 212120964479 is a prime.

It is a super-3 number, since 3×212120964487³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212120904487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060482243 + 106060482244.

It is an arithmetic number, because the mean of its divisors is an integer number (106060482244).

Almost surely, 2^212120964487 is an apocalyptic number.

212120964487 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120964487 is an equidigital number, since it uses as much as digits as its factorization.

212120964487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

Adding to 212120964487 its reverse (784469021212), we get a palindrome (996589985699).

The spelling of 212120964487 in words is "two hundred twelve billion, one hundred twenty million, nine hundred sixty-four thousand, four hundred eighty-seven".