1910011121 has 2 divisors, whose sum is σ = 1910011122. Its totient is φ = 1910011120.

The previous prime is 1910011073. The next prime is 1910011123. The reversal of 1910011121 is 1211100191.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1895296225 + 14714896 = 43535^2 + 3836^2 .

It is a cyclic number.

It is not a de Polignac number, because 1910011121 - 2³⁰ = 836269297 is a prime.

Together with 1910011123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1910011121.

It is not a weakly prime, because it can be changed into another prime (1910011123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 955005560 + 955005561.

It is an arithmetic number, because the mean of its divisors is an integer number (955005561).

Almost surely, 2^1910011121 is an apocalyptic number.

It is an amenable number.

1910011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1910011121 is an equidigital number, since it uses as much as digits as its factorization.

1910011121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 17.

The square root of 1910011121 is about 43703.6739988757. The cubic root of 1910011121 is about 1240.7338530253.

The spelling of 1910011121 in words is "one billion, nine hundred ten million, eleven thousand, one hundred twenty-one".