20310134122081 has 2 divisors, whose sum is σ = 20310134122082. Its totient is φ = 20310134122080.

The previous prime is 20310134122073. The next prime is 20310134122129. The reversal of 20310134122081 is 18022143101302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12129338598400 + 8180795523681 = 3482720^2 + 2860209^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310134122081 - 2³ = 20310134122073 is a prime.

It is a super-2 number, since 2×20310134122081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20310134122021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155067061040 + 10155067061041.

It is an arithmetic number, because the mean of its divisors is an integer number (10155067061041).

Almost surely, 2^{20310134122081} is an apocalyptic number.

It is an amenable number.

20310134122081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310134122081 is an equidigital number, since it uses as much as digits as its factorization.

20310134122081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 20310134122081 its reverse (18022143101302), we get a palindrome (38332277223383).

The spelling of 20310134122081 in words is "twenty trillion, three hundred ten billion, one hundred thirty-four million, one hundred twenty-two thousand, eighty-one".