20011041142421 has 16 divisors (see below), whose sum is σ = 22997542009344. Its totient is φ = 17056557241344.

The previous prime is 20011041142409. The next prime is 20011041142423. The reversal of 20011041142421 is 12424114011002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011041142421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011041142423) 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, 356516 + ... + 6336338.

It is an arithmetic number, because the mean of its divisors is an integer number (1437346375584).

Almost surely, 2^{20011041142421} is an apocalyptic number.

It is an amenable number.

20011041142421 is a deficient number, since it is larger than the sum of its proper divisors (2986500866923).

20011041142421 is a wasteful number, since it uses less digits than its factorization.

20011041142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982500.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 20011041142421 its reverse (12424114011002), we get a palindrome (32435155153423).

The spelling of 20011041142421 in words is "twenty trillion, eleven billion, forty-one million, one hundred forty-two thousand, four hundred twenty-one".