20126101 has 2 divisors, whose sum is σ = 20126102. Its totient is φ = 20126100.

The previous prime is 20126077. The next prime is 20126129. The reversal of 20126101 is 10162102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15171025 + 4955076 = 3895^2 + 2226^2 .

It is a cyclic number.

It is not a de Polignac number, because 20126101 - 2⁵ = 20126069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20126131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063050 + 10063051.

It is an arithmetic number, because the mean of its divisors is an integer number (10063051).

Almost surely, 2^20126101 is an apocalyptic number.

It is an amenable number.

20126101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20126101 is an equidigital number, since it uses as much as digits as its factorization.

20126101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 20126101 is about 4486.2123222157. The cubic root of 20126101 is about 272.0110514901.

Adding to 20126101 its reverse (10162102), we get a palindrome (30288203).

The spelling of 20126101 in words is "twenty million, one hundred twenty-six thousand, one hundred one".