1121001202109 has 2 divisors, whose sum is σ = 1121001202110. Its totient is φ = 1121001202108.

The previous prime is 1121001202063. The next prime is 1121001202147. The reversal of 1121001202109 is 9012021001211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 966062923225 + 154938278884 = 982885^2 + 393622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121001202109 - 2¹² = 1121001198013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121001202159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560500601054 + 560500601055.

It is an arithmetic number, because the mean of its divisors is an integer number (560500601055).

Almost surely, 2^{1121001202109} is an apocalyptic number.

It is an amenable number.

1121001202109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121001202109 is an equidigital number, since it uses as much as digits as its factorization.

1121001202109 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 1121001202109 in words is "one trillion, one hundred twenty-one billion, one million, two hundred two thousand, one hundred nine".