20611242123 has 32 divisors (see below), whose sum is σ = 29944320000. Its totient is φ = 12560873472.

The previous prime is 20611242083. The next prime is 20611242137. The reversal of 20611242123 is 32124211602.

It is not a de Polignac number, because 20611242123 - 2⁹ = 20611241611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20611242093 and 20611242102.

It is not an unprimeable number, because it can be changed into a prime (20611242523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3698283 + ... + 3703851.

It is an arithmetic number, because the mean of its divisors is an integer number (935760000).

Almost surely, 2^20611242123 is an apocalyptic number.

20611242123 is a deficient number, since it is larger than the sum of its proper divisors (9333077877).

20611242123 is a wasteful number, since it uses less digits than its factorization.

20611242123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20611242123 its reverse (32124211602), we get a palindrome (52735453725).

The spelling of 20611242123 in words is "twenty billion, six hundred eleven million, two hundred forty-two thousand, one hundred twenty-three".