20424012011 has 16 divisors (see below), whose sum is σ = 22314942720. Its totient is φ = 18579015840.

The previous prime is 20424011999. The next prime is 20424012079. The reversal of 20424012011 is 11021042402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20424012011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424012311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3063800 + ... + 3070458.

It is an arithmetic number, because the mean of its divisors is an integer number (1394683920).

Almost surely, 2^20424012011 is an apocalyptic number.

20424012011 is a deficient number, since it is larger than the sum of its proper divisors (1890930709).

20424012011 is a wasteful number, since it uses less digits than its factorization.

20424012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10066.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20424012011 its reverse (11021042402), we get a palindrome (31445054413).

The spelling of 20424012011 in words is "twenty billion, four hundred twenty-four million, twelve thousand, eleven".