20012001011267 has 2 divisors, whose sum is σ = 20012001011268. Its totient is φ = 20012001011266.

The previous prime is 20012001011129. The next prime is 20012001011269. The reversal of 20012001011267 is 76211010021002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012001011267 - 2¹² = 20012001007171 is a prime.

Together with 20012001011269, 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 (20012001011269) 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, 10006000505633 + 10006000505634.

It is an arithmetic number, because the mean of its divisors is an integer number (10006000505634).

Almost surely, 2^{20012001011267} is an apocalyptic number.

20012001011267 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012001011267 is an equidigital number, since it uses as much as digits as its factorization.

20012001011267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 20012001011267 its reverse (76211010021002), we get a palindrome (96223011032269).

The spelling of 20012001011267 in words is "twenty trillion, twelve billion, one million, eleven thousand, two hundred sixty-seven".