1010021209489 has 2 divisors, whose sum is σ = 1010021209490. Its totient is φ = 1010021209488.

The previous prime is 1010021209441. The next prime is 1010021209529. The reversal of 1010021209489 is 9849021200101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 975719206225 + 34302003264 = 987785^2 + 185208^2 .

It is an emirp because it is prime and its reverse (9849021200101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1010021209489 - 2³⁵ = 975661471121 is a prime.

It is a super-2 number, since 2×1010021209489² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1010021209889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505010604744 + 505010604745.

It is an arithmetic number, because the mean of its divisors is an integer number (505010604745).

Almost surely, 2^{1010021209489} is an apocalyptic number.

It is an amenable number.

1010021209489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010021209489 is an equidigital number, since it uses as much as digits as its factorization.

1010021209489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 1010021209489 in words is "one trillion, ten billion, twenty-one million, two hundred nine thousand, four hundred eighty-nine".