1202110211009 has 2 divisors, whose sum is σ = 1202110211010. Its totient is φ = 1202110211008.

The previous prime is 1202110210991. The next prime is 1202110211011. The reversal of 1202110211009 is 9001120112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1168068115984 + 34042095025 = 1080772^2 + 184505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202110211009 - 2²⁰ = 1202109162433 is a prime.

Together with 1202110211011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1202110211059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601055105504 + 601055105505.

It is an arithmetic number, because the mean of its divisors is an integer number (601055105505).

Almost surely, 2^{1202110211009} is an apocalyptic number.

It is an amenable number.

1202110211009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202110211009 is an equidigital number, since it uses as much as digits as its factorization.

1202110211009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1202110211009 in words is "one trillion, two hundred two billion, one hundred ten million, two hundred eleven thousand, nine".