212341109987 has 2 divisors, whose sum is σ = 212341109988. Its totient is φ = 212341109986.

The previous prime is 212341109977. The next prime is 212341110011. The reversal of 212341109987 is 789901143212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212341109987 - 2¹⁶ = 212341044451 is a prime.

It is a super-2 number, since 2×212341109987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212341109947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106170554993 + 106170554994.

It is an arithmetic number, because the mean of its divisors is an integer number (106170554994).

Almost surely, 2^212341109987 is an apocalyptic number.

212341109987 is a deficient number, since it is larger than the sum of its proper divisors (1).

212341109987 is an equidigital number, since it uses as much as digits as its factorization.

212341109987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 212341109987 in words is "two hundred twelve billion, three hundred forty-one million, one hundred nine thousand, nine hundred eighty-seven".