2011121269 has 2 divisors, whose sum is σ = 2011121270. Its totient is φ = 2011121268.

The previous prime is 2011121201. The next prime is 2011121317. The reversal of 2011121269 is 9621211102.

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., 1367890225 + 643231044 = 36985^2 + 25362^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011121269 - 2¹¹ = 2011119221 is a prime.

It is a super-2 number, since 2×2011121269² = 8089217517248340722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011127269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005560634 + 1005560635.

It is an arithmetic number, because the mean of its divisors is an integer number (1005560635).

Almost surely, 2^2011121269 is an apocalyptic number.

It is an amenable number.

2011121269 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011121269 is an equidigital number, since it uses as much as digits as its factorization.

2011121269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 2011121269 is about 44845.5267445929. The cubic root of 2011121269 is about 1262.2520547495.

The spelling of 2011121269 in words is "two billion, eleven million, one hundred twenty-one thousand, two hundred sixty-nine".