20334040121 has 2 divisors, whose sum is σ = 20334040122. Its totient is φ = 20334040120.

The previous prime is 20334040093. The next prime is 20334040147. The reversal of 20334040121 is 12104043302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11206339600 + 9127700521 = 105860^2 + 95539^2 .

It is a cyclic number.

It is not a de Polignac number, because 20334040121 - 2¹⁸ = 20333777977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20334040093 and 20334040102.

It is not a weakly prime, because it can be changed into another prime (20334040421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167020060 + 10167020061.

It is an arithmetic number, because the mean of its divisors is an integer number (10167020061).

Almost surely, 2^20334040121 is an apocalyptic number.

It is an amenable number.

20334040121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20334040121 is an equidigital number, since it uses as much as digits as its factorization.

20334040121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20334040121 its reverse (12104043302), we get a palindrome (32438083423).

The spelling of 20334040121 in words is "twenty billion, three hundred thirty-four million, forty thousand, one hundred twenty-one".