1010200121989 has 2 divisors, whose sum is σ = 1010200121990. Its totient is φ = 1010200121988.

The previous prime is 1010200121971. The next prime is 1010200122007. The reversal of 1010200121989 is 9891210020101.

1010200121989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (1010200121971) and next prime (1010200122007).

It can be written as a sum of positive squares in only one way, i.e., 672331121764 + 337869000225 = 819958^2 + 581265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1010200121989 is a prime.

It is a super-2 number, since 2×1010200121989² (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 (1010200121389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505100060994 + 505100060995.

It is an arithmetic number, because the mean of its divisors is an integer number (505100060995).

Almost surely, 2^{1010200121989} is an apocalyptic number.

It is an amenable number.

1010200121989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010200121989 is an equidigital number, since it uses as much as digits as its factorization.

1010200121989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 1010200121989 in words is "one trillion, ten billion, two hundred million, one hundred twenty-one thousand, nine hundred eighty-nine".