20118306200621 has 8 divisors (see below), whose sum is σ = 20130304818624. Its totient is φ = 20106308138400.

The previous prime is 20118306200591. The next prime is 20118306200659. The reversal of 20118306200621 is 12600260381102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20118306200621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20118306200821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89321696 + ... + 89546646.

It is an arithmetic number, because the mean of its divisors is an integer number (2516288102328).

Almost surely, 2^{20118306200621} is an apocalyptic number.

It is an amenable number.

20118306200621 is a deficient number, since it is larger than the sum of its proper divisors (11998618003).

20118306200621 is a wasteful number, since it uses less digits than its factorization.

20118306200621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277891.

The product of its (nonzero) digits is 6912, while the sum is 32.

Adding to 20118306200621 its reverse (12600260381102), we get a palindrome (32718566581723).

The spelling of 20118306200621 in words is "twenty trillion, one hundred eighteen billion, three hundred six million, two hundred thousand, six hundred twenty-one".