10211231711987 has 2 divisors, whose sum is σ = 10211231711988. Its totient is φ = 10211231711986.

The previous prime is 10211231711953. The next prime is 10211231712103. The reversal of 10211231711987 is 78911713211201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10211231711987 - 2¹⁸ = 10211231449843 is a prime.

It is not a weakly prime, because it can be changed into another prime (10211231711287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105615855993 + 5105615855994.

It is an arithmetic number, because the mean of its divisors is an integer number (5105615855994).

Almost surely, 2^{10211231711987} is an apocalyptic number.

10211231711987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211231711987 is an equidigital number, since it uses as much as digits as its factorization.

10211231711987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 44.

The spelling of 10211231711987 in words is "ten trillion, two hundred eleven billion, two hundred thirty-one million, seven hundred eleven thousand, nine hundred eighty-seven".