20102012101 has 4 divisors (see below), whose sum is σ = 20385139104. Its totient is φ = 19818885100.

The previous prime is 20102012089. The next prime is 20102012129. The reversal of 20102012101 is 10121020102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102012101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102012131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141563395 + ... + 141563536.

It is an arithmetic number, because the mean of its divisors is an integer number (5096284776).

Almost surely, 2^20102012101 is an apocalyptic number.

It is an amenable number.

20102012101 is a deficient number, since it is larger than the sum of its proper divisors (283127003).

20102012101 is an equidigital number, since it uses as much as digits as its factorization.

20102012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283127002.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20102012101 its reverse (10121020102), we get a palindrome (30223032203).

The spelling of 20102012101 in words is "twenty billion, one hundred two million, twelve thousand, one hundred one".