20101210211959 has 2 divisors, whose sum is σ = 20101210211960. Its totient is φ = 20101210211958.

The previous prime is 20101210211917. The next prime is 20101210212133. The reversal of 20101210211959 is 95911201210102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20101210211959 - 2¹¹ = 20101210209911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101210251959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050605105979 + 10050605105980.

It is an arithmetic number, because the mean of its divisors is an integer number (10050605105980).

Almost surely, 2^{20101210211959} is an apocalyptic number.

20101210211959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101210211959 is an equidigital number, since it uses as much as digits as its factorization.

20101210211959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 34.

The spelling of 20101210211959 in words is "twenty trillion, one hundred one billion, two hundred ten million, two hundred eleven thousand, nine hundred fifty-nine".