1005210121469 has 2 divisors, whose sum is σ = 1005210121470. Its totient is φ = 1005210121468.

The previous prime is 1005210121429. The next prime is 1005210121583. The reversal of 1005210121469 is 9641210125001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820903045369 + 184307076100 = 906037^2 + 429310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005210121469 - 2⁸ = 1005210121213 is a prime.

It is a super-2 number, since 2×1005210121469² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005210121429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502605060734 + 502605060735.

It is an arithmetic number, because the mean of its divisors is an integer number (502605060735).

Almost surely, 2^{1005210121469} is an apocalyptic number.

It is an amenable number.

1005210121469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005210121469 is an equidigital number, since it uses as much as digits as its factorization.

1005210121469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 1005210121469 in words is "one trillion, five billion, two hundred ten million, one hundred twenty-one thousand, four hundred sixty-nine".