1200010112989 has 2 divisors, whose sum is σ = 1200010112990. Its totient is φ = 1200010112988.

The previous prime is 1200010112957. The next prime is 1200010113007. The reversal of 1200010112989 is 9892110100021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749142180900 + 450867932089 = 865530^2 + 671467^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200010112989 - 2⁵ = 1200010112957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200010112909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600005056494 + 600005056495.

It is an arithmetic number, because the mean of its divisors is an integer number (600005056495).

Almost surely, 2^{1200010112989} is an apocalyptic number.

It is an amenable number.

1200010112989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200010112989 is an equidigital number, since it uses as much as digits as its factorization.

1200010112989 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 1200010112989 in words is "one trillion, two hundred billion, ten million, one hundred twelve thousand, nine hundred eighty-nine".