20012001011269 has 2 divisors, whose sum is σ = 20012001011270. Its totient is φ = 20012001011268.

The previous prime is 20012001011267. The next prime is 20012001011287. The reversal of 20012001011269 is 96211010021002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17435109238369 + 2576891772900 = 4175537^2 + 1605270^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012001011269 - 2¹ = 20012001011267 is a prime.

It is a super-2 number, since 2×20012001011269² (a number of 27 digits) contains 22 as substring.

Together with 20012001011267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012001011267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006000505634 + 10006000505635.

It is an arithmetic number, because the mean of its divisors is an integer number (10006000505635).

Almost surely, 2^{20012001011269} is an apocalyptic number.

It is an amenable number.

20012001011269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012001011269 is an equidigital number, since it uses as much as digits as its factorization.

20012001011269 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 spelling of 20012001011269 in words is "twenty trillion, twelve billion, one million, eleven thousand, two hundred sixty-nine".