20122232113 has 4 divisors (see below), whose sum is σ = 20123571748. Its totient is φ = 20120892480.

The previous prime is 20122232089. The next prime is 20122232149. The reversal of 20122232113 is 31123222102.

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 17740108864 + 2382123249 = 133192^2 + 48807^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122232113 - 2⁹ = 20122231601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122232173) 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 in 3 ways as a sum of consecutive naturals, for example, 647028 + ... + 677413.

It is an arithmetic number, because the mean of its divisors is an integer number (5030892937).

Almost surely, 2^20122232113 is an apocalyptic number.

It is an amenable number.

20122232113 is a deficient number, since it is larger than the sum of its proper divisors (1339635).

20122232113 is a wasteful number, since it uses less digits than its factorization.

20122232113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339634.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20122232113 its reverse (31123222102), we get a palindrome (51245454215).

The spelling of 20122232113 in words is "twenty billion, one hundred twenty-two million, two hundred thirty-two thousand, one hundred thirteen".