12122220001987 has 2 divisors, whose sum is σ = 12122220001988. Its totient is φ = 12122220001986.

The previous prime is 12122220001981. The next prime is 12122220002029. The reversal of 12122220001987 is 78910002222121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122220001987 - 2¹⁹ = 12122219477699 is a prime.

It is not a weakly prime, because it can be changed into another prime (12122220001981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061110000993 + 6061110000994.

It is an arithmetic number, because the mean of its divisors is an integer number (6061110000994).

Almost surely, 2^{12122220001987} is an apocalyptic number.

12122220001987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122220001987 is an equidigital number, since it uses as much as digits as its factorization.

12122220001987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 12122220001987 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty million, one thousand, nine hundred eighty-seven".