20121013273 has 2 divisors, whose sum is σ = 20121013274. Its totient is φ = 20121013272.

The previous prime is 20121013267. The next prime is 20121013279. The reversal of 20121013273 is 37231012102.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20121013267) and next prime (20121013279).

It can be written as a sum of positive squares in only one way, i.e., 19273213584 + 847799689 = 138828^2 + 29117^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121013273 - 2²¹ = 20118916121 is a prime.

It is not a weakly prime, because it can be changed into another prime (20121013279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060506636 + 10060506637.

It is an arithmetic number, because the mean of its divisors is an integer number (10060506637).

Almost surely, 2^20121013273 is an apocalyptic number.

It is an amenable number.

20121013273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121013273 is an equidigital number, since it uses as much as digits as its factorization.

20121013273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 20121013273 its reverse (37231012102), we get a palindrome (57352025375).

The spelling of 20121013273 in words is "twenty billion, one hundred twenty-one million, thirteen thousand, two hundred seventy-three".