20102140044221 has 8 divisors (see below), whose sum is σ = 20290376461824. Its totient is φ = 19913910403680.

The previous prime is 20102140044211. The next prime is 20102140044277. The reversal of 20102140044221 is 12244004120102.

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

It is a cyclic number.

It is not a de Polignac number, because 20102140044221 - 2⁶ = 20102140044157 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 (20102140044211) 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, 4366961 + ... + 7699001.

It is an arithmetic number, because the mean of its divisors is an integer number (2536297057728).

Almost surely, 2^{20102140044221} is an apocalyptic number.

It is an amenable number.

20102140044221 is a deficient number, since it is larger than the sum of its proper divisors (188236417603).

20102140044221 is a wasteful number, since it uses less digits than its factorization.

20102140044221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388531.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 20102140044221 its reverse (12244004120102), we get a palindrome (32346144164323).

The spelling of 20102140044221 in words is "twenty trillion, one hundred two billion, one hundred forty million, forty-four thousand, two hundred twenty-one".