1000121121983 has 2 divisors, whose sum is σ = 1000121121984. Its totient is φ = 1000121121982.

The previous prime is 1000121121971. The next prime is 1000121122009. The reversal of 1000121121983 is 3891211210001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000121121983 - 2²⁸ = 999852686527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000121171983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500060560991 + 500060560992.

It is an arithmetic number, because the mean of its divisors is an integer number (500060560992).

Almost surely, 2^{1000121121983} is an apocalyptic number.

1000121121983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000121121983 is an equidigital number, since it uses as much as digits as its factorization.

1000121121983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

Adding to 1000121121983 its reverse (3891211210001), we get a palindrome (4891332331984).

The spelling of 1000121121983 in words is "one trillion, one hundred twenty-one million, one hundred twenty-one thousand, nine hundred eighty-three".