2231230121987 has 2 divisors, whose sum is σ = 2231230121988. Its totient is φ = 2231230121986.

The previous prime is 2231230121977. The next prime is 2231230122001. The reversal of 2231230121987 is 7891210321322.

2231230121987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2231230121987 - 2¹⁸ = 2231229859843 is a prime.

It is a super-3 number, since 3×2231230121987³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2231230121977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115615060993 + 1115615060994.

It is an arithmetic number, because the mean of its divisors is an integer number (1115615060994).

Almost surely, 2^{2231230121987} is an apocalyptic number.

2231230121987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231230121987 is an equidigital number, since it uses as much as digits as its factorization.

2231230121987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 2231230121987 in words is "two trillion, two hundred thirty-one billion, two hundred thirty million, one hundred twenty-one thousand, nine hundred eighty-seven".