1021222002187 has 2 divisors, whose sum is σ = 1021222002188. Its totient is φ = 1021222002186.

The previous prime is 1021222002083. The next prime is 1021222002221. The reversal of 1021222002187 is 7812002221201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021222002187 - 2³⁹ = 471466188299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021222002487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510611001093 + 510611001094.

It is an arithmetic number, because the mean of its divisors is an integer number (510611001094).

Almost surely, 2^{1021222002187} is an apocalyptic number.

1021222002187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021222002187 is an equidigital number, since it uses as much as digits as its factorization.

1021222002187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 28.

Adding to 1021222002187 its reverse (7812002221201), we get a palindrome (8833224223388).

The spelling of 1021222002187 in words is "one trillion, twenty-one billion, two hundred twenty-two million, two thousand, one hundred eighty-seven".