20123122 has 4 divisors (see below), whose sum is σ = 30184686. Its totient is φ = 10061560.

The previous prime is 20123119. The next prime is 20123141. The reversal of 20123122 is 22132102.

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

It can be written as a sum of positive squares in only one way, i.e., 13461561 + 6661561 = 3669^2 + 2581^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030779 + ... + 5030782.

Almost surely, 2^20123122 is an apocalyptic number.

20123122 is a deficient number, since it is larger than the sum of its proper divisors (10061564).

20123122 is a wasteful number, since it uses less digits than its factorization.

20123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10061563.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20123122 is about 4485.8802926516. The cubic root of 20123122 is about 271.9976300976.

Adding to 20123122 its reverse (22132102), we get a palindrome (42255224).

The spelling of 20123122 in words is "twenty million, one hundred twenty-three thousand, one hundred twenty-two".