20111202424 has 8 divisors (see below), whose sum is σ = 37708504560. Its totient is φ = 10055601208.

The previous prime is 20111202413. The next prime is 20111202427. The reversal of 20111202424 is 42420211102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111202427) 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 as a sum of consecutive naturals, namely, 1256950144 + ... + 1256950159.

It is an arithmetic number, because the mean of its divisors is an integer number (4713563070).

Almost surely, 2^20111202424 is an apocalyptic number.

It is an amenable number.

20111202424 is a deficient number, since it is larger than the sum of its proper divisors (17597302136).

20111202424 is a wasteful number, since it uses less digits than its factorization.

20111202424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513900309 (or 2513900305 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20111202424 its reverse (42420211102), we get a palindrome (62531413526).

The spelling of 20111202424 in words is "twenty billion, one hundred eleven million, two hundred two thousand, four hundred twenty-four".