212320320020987 has 2 divisors, whose sum is σ = 212320320020988. Its totient is φ = 212320320020986.

The previous prime is 212320320020983. The next prime is 212320320021059. The reversal of 212320320020987 is 789020023023212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212320320020987 - 2² = 212320320020983 is a prime.

It is a super-2 number, since 2×212320320020987² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212320320020981) 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, 106160160010493 + 106160160010494.

It is an arithmetic number, because the mean of its divisors is an integer number (106160160010494).

Almost surely, 2^{212320320020987} is an apocalyptic number.

212320320020987 is a deficient number, since it is larger than the sum of its proper divisors (1).

212320320020987 is an equidigital number, since it uses as much as digits as its factorization.

212320320020987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 212320320020987 in words is "two hundred twelve trillion, three hundred twenty billion, three hundred twenty million, twenty thousand, nine hundred eighty-seven".