20101212010101 has 64 divisors (see below), whose sum is σ = 28783704128256. Its totient is φ = 12458284185600.

The previous prime is 20101212010051. The next prime is 20101212010111. The reversal of 20101212010101 is 10101021210102.

It is not a de Polignac number, because 20101212010101 - 2¹⁴ = 20101211993717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101212010111) 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 in 63 ways as a sum of consecutive naturals, for example, 52560111 + ... + 52941171.

It is an arithmetic number, because the mean of its divisors is an integer number (449745377004).

Almost surely, 2^{20101212010101} is an apocalyptic number.

It is an amenable number.

20101212010101 is a deficient number, since it is larger than the sum of its proper divisors (8682492118155).

20101212010101 is a wasteful number, since it uses less digits than its factorization.

20101212010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381382.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20101212010101 its reverse (10101021210102), we get a palindrome (30202233220203).

The spelling of 20101212010101 in words is "twenty trillion, one hundred one billion, two hundred twelve million, ten thousand, one hundred one".