20012322101 has 2 divisors, whose sum is σ = 20012322102. Its totient is φ = 20012322100.

The previous prime is 20012322091. The next prime is 20012322151. The reversal of 20012322101 is 10122321002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15037135876 + 4975186225 = 122626^2 + 70535^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012322101 - 2⁶ = 20012322037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012322151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006161050 + 10006161051.

It is an arithmetic number, because the mean of its divisors is an integer number (10006161051).

Almost surely, 2^20012322101 is an apocalyptic number.

It is an amenable number.

20012322101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012322101 is an equidigital number, since it uses as much as digits as its factorization.

20012322101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20012322101 its reverse (10122321002), we get a palindrome (30134643103).

The spelling of 20012322101 in words is "twenty billion, twelve million, three hundred twenty-two thousand, one hundred one".