20101212010223 has 2 divisors, whose sum is σ = 20101212010224. Its totient is φ = 20101212010222.

The previous prime is 20101212010213. The next prime is 20101212010241. The reversal of 20101212010223 is 32201021210102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101212010223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101212010213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050606005111 + 10050606005112.

It is an arithmetic number, because the mean of its divisors is an integer number (10050606005112).

Almost surely, 2^{20101212010223} is an apocalyptic number.

20101212010223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101212010223 is an equidigital number, since it uses as much as digits as its factorization.

20101212010223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20101212010223 its reverse (32201021210102), we get a palindrome (52302233220325).

The spelling of 20101212010223 in words is "twenty trillion, one hundred one billion, two hundred twelve million, ten thousand, two hundred twenty-three".