20110101111959 has 2 divisors, whose sum is σ = 20110101111960. Its totient is φ = 20110101111958.

The previous prime is 20110101111889. The next prime is 20110101112033. The reversal of 20110101111959 is 95911110101102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20110101111959 - 2¹⁶ = 20110101046423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110101114959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055050555979 + 10055050555980.

It is an arithmetic number, because the mean of its divisors is an integer number (10055050555980).

Almost surely, 2^{20110101111959} is an apocalyptic number.

20110101111959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110101111959 is an equidigital number, since it uses as much as digits as its factorization.

20110101111959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 32.

The spelling of 20110101111959 in words is "twenty trillion, one hundred ten billion, one hundred one million, one hundred eleven thousand, nine hundred fifty-nine".