1001222020987 has 2 divisors, whose sum is σ = 1001222020988. Its totient is φ = 1001222020986.

The previous prime is 1001222020973. The next prime is 1001222020993. The reversal of 1001222020987 is 7890202221001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001222020987 - 2²³ = 1001213632379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001222020907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500611010493 + 500611010494.

It is an arithmetic number, because the mean of its divisors is an integer number (500611010494).

Almost surely, 2^{1001222020987} is an apocalyptic number.

1001222020987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001222020987 is an equidigital number, since it uses as much as digits as its factorization.

1001222020987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

Adding to 1001222020987 its reverse (7890202221001), we get a palindrome (8891424241988).

The spelling of 1001222020987 in words is "one trillion, one billion, two hundred twenty-two million, twenty thousand, nine hundred eighty-seven".