20120010101 has 6 divisors (see below), whose sum is σ = 20224836450. Its totient is φ = 20015724288.

The previous prime is 20120010067. The next prime is 20120010133. The reversal of 20120010101 is 10101002102.

It can be written as a sum of positive squares in 3 ways, for example, as 17023876 + 20102986225 = 4126^2 + 141785^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20120010101 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 (20120010161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 232826 + ... + 307323.

It is an arithmetic number, because the mean of its divisors is an integer number (3370806075).

Almost surely, 2^20120010101 is an apocalyptic number.

It is an amenable number.

20120010101 is a deficient number, since it is larger than the sum of its proper divisors (104826349).

20120010101 is an frugal number, since it uses more digits than its factorization.

20120010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540535 (or 540342 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20120010101 its reverse (10101002102), we get a palindrome (30221012203).

The spelling of 20120010101 in words is "twenty billion, one hundred twenty million, ten thousand, one hundred one".