20202240044421 has 24 divisors (see below), whose sum is σ = 30187600803360. Its totient is φ = 13003591860000.

The previous prime is 20202240044369. The next prime is 20202240044507. The reversal of 20202240044421 is 12444004220202.

It is not a de Polignac number, because 20202240044421 - 2¹⁰ = 20202240043397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202240044321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25249606 + ... + 26037416.

It is an arithmetic number, because the mean of its divisors is an integer number (1257816700140).

Almost surely, 2^{20202240044421} is an apocalyptic number.

It is an amenable number.

20202240044421 is a deficient number, since it is larger than the sum of its proper divisors (9985360758939).

20202240044421 is a wasteful number, since it uses less digits than its factorization.

20202240044421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886097 (or 886094 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 20202240044421 its reverse (12444004220202), we get a palindrome (32646244264623).

The spelling of 20202240044421 in words is "twenty trillion, two hundred two billion, two hundred forty million, forty-four thousand, four hundred twenty-one".