1000121121047 has 2 divisors, whose sum is σ = 1000121121048. Its totient is φ = 1000121121046.

The previous prime is 1000121121031. The next prime is 1000121121121. The reversal of 1000121121047 is 7401211210001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000121121047 - 2⁴ = 1000121121031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000121921047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500060560523 + 500060560524.

It is an arithmetic number, because the mean of its divisors is an integer number (500060560524).

Almost surely, 2^{1000121121047} is an apocalyptic number.

1000121121047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000121121047 is an equidigital number, since it uses as much as digits as its factorization.

1000121121047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 1000121121047 its reverse (7401211210001), we get a palindrome (8401332331048).

The spelling of 1000121121047 in words is "one trillion, one hundred twenty-one million, one hundred twenty-one thousand, forty-seven".