20600115121 has 2 divisors, whose sum is σ = 20600115122. Its totient is φ = 20600115120.

The previous prime is 20600115119. The next prime is 20600115127. The reversal of 20600115121 is 12151100602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19975864896 + 624250225 = 141336^2 + 24985^2 .

It is a cyclic number.

It is not a de Polignac number, because 20600115121 - 2¹ = 20600115119 is a prime.

Together with 20600115119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20600115127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10300057560 + 10300057561.

It is an arithmetic number, because the mean of its divisors is an integer number (10300057561).

Almost surely, 2^20600115121 is an apocalyptic number.

It is an amenable number.

20600115121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20600115121 is an equidigital number, since it uses as much as digits as its factorization.

20600115121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 20600115121 its reverse (12151100602), we get a palindrome (32751215723).

It can be divided in two parts, 206001 and 15121, that added together give a palindrome (221122).

The spelling of 20600115121 in words is "twenty billion, six hundred million, one hundred fifteen thousand, one hundred twenty-one".