1030121201999 has 2 divisors, whose sum is σ = 1030121202000. Its totient is φ = 1030121201998.

The previous prime is 1030121201987. The next prime is 1030121202007. The reversal of 1030121201999 is 9991021210301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1030121201999 - 2¹⁶ = 1030121136463 is a prime.

It is a super-2 number, since 2×1030121201999² (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 (1030121201699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515060600999 + 515060601000.

It is an arithmetic number, because the mean of its divisors is an integer number (515060601000).

Almost surely, 2^{1030121201999} is an apocalyptic number.

1030121201999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030121201999 is an equidigital number, since it uses as much as digits as its factorization.

1030121201999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 38.

The spelling of 1030121201999 in words is "one trillion, thirty billion, one hundred twenty-one million, two hundred one thousand, nine hundred ninety-nine".