1200210999989 has 2 divisors, whose sum is σ = 1200210999990. Its totient is φ = 1200210999988.

The previous prime is 1200210999983. The next prime is 1200211000013. The reversal of 1200210999989 is 9899990120021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1174037260900 + 26173739089 = 1083530^2 + 161783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200210999989 - 2⁴ = 1200210999973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200210999983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600105499994 + 600105499995.

It is an arithmetic number, because the mean of its divisors is an integer number (600105499995).

Almost surely, 2^{1200210999989} is an apocalyptic number.

It is an amenable number.

1200210999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200210999989 is an equidigital number, since it uses as much as digits as its factorization.

1200210999989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1889568, while the sum is 59.

The spelling of 1200210999989 in words is "one trillion, two hundred billion, two hundred ten million, nine hundred ninety-nine thousand, nine hundred eighty-nine".