20343134514121 has 2 divisors, whose sum is σ = 20343134514122. Its totient is φ = 20343134514120.

The previous prime is 20343134514049. The next prime is 20343134514239. The reversal of 20343134514121 is 12141543134302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17408546246025 + 2934588268096 = 4172355^2 + 1713064^2 .

It is a cyclic number.

It is not a de Polignac number, because 20343134514121 - 2¹⁹ = 20343133989833 is a prime.

It is not a weakly prime, because it can be changed into another prime (20343134514821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171567257060 + 10171567257061.

It is an arithmetic number, because the mean of its divisors is an integer number (10171567257061).

Almost surely, 2^{20343134514121} is an apocalyptic number.

It is an amenable number.

20343134514121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20343134514121 is an equidigital number, since it uses as much as digits as its factorization.

20343134514121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 20343134514121 its reverse (12141543134302), we get a palindrome (32484677648423).

The spelling of 20343134514121 in words is "twenty trillion, three hundred forty-three billion, one hundred thirty-four million, five hundred fourteen thousand, one hundred twenty-one".