20122012313 has 4 divisors (see below), whose sum is σ = 21669859428. Its totient is φ = 18574165200.

The previous prime is 20122012303. The next prime is 20122012373. The reversal of 20122012313 is 31321022102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12622971904 + 7499040409 = 112352^2 + 86597^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122012313 - 2²² = 20117818009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20122012291 and 20122012300.

It is not an unprimeable number, because it can be changed into a prime (20122012303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773923538 + ... + 773923563.

It is an arithmetic number, because the mean of its divisors is an integer number (5417464857).

Almost surely, 2^20122012313 is an apocalyptic number.

It is an amenable number.

20122012313 is a deficient number, since it is larger than the sum of its proper divisors (1547847115).

20122012313 is a wasteful number, since it uses less digits than its factorization.

20122012313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547847114.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20122012313 its reverse (31321022102), we get a palindrome (51443034415).

The spelling of 20122012313 in words is "twenty billion, one hundred twenty-two million, twelve thousand, three hundred thirteen".